
Werner Hartmann (30 January 1912 – 8 March 1988) was a German
physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe.
Physicists generally are interested in the root or ultimate ca ...
who introduced
microelectronics
Microelectronics is a subfield of electronics. As the name suggests, microelectronics relates to the study and manufacture (or microfabrication) of very small electronic designs and components. Usually, but not always, this means micrometre-s ...
into
East Germany
East Germany, officially the German Democratic Republic (GDR; german: Deutsche Demokratische Republik, , DDR, ), was a country that existed from its creation on 7 October 1949 until its dissolution on 3 October 1990. In these years the state ...
. He studied physics at the ''
Technische Hochschule Berlin
The Technical University of Berlin (official name both in English and german: link=no, Technische Universität Berlin, also known as TU Berlin and Berlin Institute of Technology) is a public research university located in Berlin, Germany. It ...
'' and worked at
Siemens before joining ''
Fernseh GmbH''. At the end of
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, he and his research staff were flown to the
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...
to work on their atomic bomb project; he was assigned to Institute G. In 1955, he arrived in the
German Democratic Republic
German(s) may refer to:
* Germany (of or related to)
**Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ger ...
(GDR); in the same year, he founded and became the director of the ''VEB Vakutronik Dresden'', later ''VEB RFT Meßelektronik Dresden''. In 1956, he completed his Habilitation at the
Technische Hochschule Dresden and also became a professor for ''Kernphysikalische Elektronik'' there. In 1961, he founded the ''Arbeitsstelle für Molekularelektronik Dresden (AME)''. He was awarded the
National Prize of GDR in 1958. In 1974, he was removed from his positions, significantly demoted, and sent to work as a staff scientist at the ''VEB Spurenmetalle Freiberg''. Hartmann had been the object of security investigations by the ''
Stasi
The Ministry for State Security, commonly known as the (),An abbreviation of . was the state security service of the East Germany from 1950 to 1990.
The Stasi's function was similar to the KGB, serving as a means of maintaining state author ...
'' for some time; while he was investigated at length and repeatedly interrogated, the alleged charges were politically motivated and no trial ever took place. The ''Werner-Hartmann-Preis für Chipdesign'' is an industrial award given in Hartmann's honor for achievement in the field of semiconductors.
Early life
Hartmann was born in
Berlin
Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...
-Friedenau. In 1930, he began studies in physics at the ''Technische Hochschule Berlin'' (reorganized and renamed the ''
Technische Universität Berlin
The Technical University of Berlin (official name both in English and german: link=no, Technische Universität Berlin, also known as TU Berlin and Berlin Institute of Technology) is a public research university located in Berlin, Germany. It was ...
'' in 1946). His professors there included
Walter Schottky
Walter Hans Schottky (23 July 1886 – 4 March 1976) was a German physicist who played a major early role in developing the theory of electron and ion emission phenomena, invented the screen-grid vacuum tube in 1915 while working at Siemens, ...
and
Gustav Hertz
Gustav Ludwig Hertz (; 22 July 1887 – 30 October 1975) was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Rudolf Hertz.
Biography
Hertz was born in Hamb ...
.
Career
In Germany
In 1935, Hartmann became a research associate to
Gustav Hertz
Gustav Ludwig Hertz (; 22 July 1887 – 30 October 1975) was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Rudolf Hertz.
Biography
Hertz was born in Hamb ...
, Nobel laureate and director of Research Laboratory II at
Siemens. At Siemens, he engaged in research on semiconductors. In 1937, he began work at ''
Fernseh GmbH''; his work there made him exempt from military service during
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
.
[
][Augustine, 2007, 11-12.]
In the Soviet Union
Hartmann's 10 years in the Soviet Union are best understood in the context of the collective fate of five prominent Berlin
Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...
scientists in 1945, one of them being his teacher and mentor, Gustav Hertz
Gustav Ludwig Hertz (; 22 July 1887 – 30 October 1975) was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Rudolf Hertz.
Biography
Hertz was born in Hamb ...
.
At the close of World War II, the Soviet Union had special search teams operating in Austria and Germany, especially in Berlin, to identify and “requisition” equipment, materiel, intellectual property, and personnel useful to the Soviet atomic bomb project
The Soviet atomic bomb project was the Classified information in Russia, classified research and development program that was authorized by Joseph Stalin in the Soviet Union to develop nuclear weapons during and after World War II.
Although th ...
. The exploitation teams were under the Russian Alsos, and they were headed by Lavrenij Beria's deputy, Colonel General A. P. Zavenyagin. These teams were composed of scientific staff members, in NKVD
The People's Commissariat for Internal Affairs (russian: Наро́дный комиссариа́т вну́тренних дел, Naródnyy komissariát vnútrennikh del, ), abbreviated NKVD ( ), was the interior ministry of the Soviet Union.
...
officer's uniforms, from the bomb project's only laboratory, Laboratory No. 2, in Moscow. In mid-May 1945, the Soviet nuclear physicists Georgy Flerov
Georgii Nikolayevich Flyorov (also spelled Flerov, rus, Гео́ргий Никола́евич Флёров, p=gʲɪˈorgʲɪj nʲɪkɐˈlajɪvʲɪtɕ ˈflʲɵrəf; 2 March 1913 – 19 November 1990) was a Soviet physicist who is known for h ...
and Lev Artsimovich
Lev Andreyevich Artsimovich ( Russian: Лев Андреевич Арцимович, February 25, 1909 – March 1, 1973), also transliterated Arzimowitsch, was a Soviet physicist who is regarded as the one of the founder of Tokamak— a device ...
, in NKVD colonel's uniforms, compelled Karl Zimmer to take them to the location of Nikolaus Riehl
Nikolaus Riehl (24 May 1901 – 2 August 1990) was a German nuclear physicist. He was head of the scientific headquarters of Auergesellschaft. When the Russians entered Berlin near the end of World War II, he was invited to the Soviet Union, whe ...
and his staff, who had evacuated their ''Auergesellschaft'' facilities and were west of Berlin, hoping to be in an area occupied by the American or British military forces; Riehl was the scientific director for Auergesellschaft
The industrial firm ''Auergesellschaft'' was founded in 1892 with headquarters in Berlin. Up to the end of World War II, ''Auergesellschaft'' had manufacturing and research activities in the areas of gas mantles, luminescence, rare earths, radioac ...
and involved in the German atomic energy project Uranverin. Riehl was detained at the search team's facility in Berlin-Friedrichshagen for a week. This sojourn in Berlin turned into 10 years in the Soviet Union! Riehl was sent there to head a group, at Plant No. 12 in Ehlektrostal’ (Электросталь), tasked with industrializing the production of reactor-grade uranium.[Riehl and Seitz, 1996, 71-72.][Oleynikov, 2000, 7.]
Manfred von Ardenne
Manfred von Ardenne (20 January 1907 – 26 May 1997) was a German researcher and applied physicist and inventor. He took out approximately 600 patents in fields including electron microscopy, medical technology, nuclear technology, plasma physics ...
, director of his private laboratory ''Forschungslaboratorium für Elektronenphysik'', Gustav Hertz
Gustav Ludwig Hertz (; 22 July 1887 – 30 October 1975) was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Rudolf Hertz.
Biography
Hertz was born in Hamb ...
, Nobel laureate and director of Research Laboratory II at Siemens, Peter Adolf Thiessen, ordinarius professor at the Humboldt University of Berlin
The Humboldt University of Berlin (german: link=no, Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a public university, public research university in the central borough of Mitte in Berlin, Germany.
The university was established ...
and director of the ''Kaiser-Wilhelm Institut für physikalische Chemie und Elektrochemie'' in Berlin-Dahlem
Dahlem ( or ) is a locality of the Steglitz-Zehlendorf borough in southwestern Berlin. Until Berlin's 2001 administrative reform it was a part of the former borough of Zehlendorf. It is located between the mansion settlements of Grunewald and ...
, and Max Volmer
Max Volmer (; 3 May 1885 – 3 June 1965) was a German physical chemist, who made important contributions in electrochemistry, in particular on electrode kinetics. He co-developed the Butler–Volmer equation. Volmer held the chair and direct ...
, ordinarius professor and director of the Physical Chemistry Institute at the ''Technische Hochschule Berlin
The Technical University of Berlin (official name both in English and german: link=no, Technische Universität Berlin, also known as TU Berlin and Berlin Institute of Technology) is a public research university located in Berlin, Germany. It ...
'', had made a pact. The pact was a pledge that whoever first made contact with the Soviets would speak for the rest. The objectives of their pact were threefold:
* Prevent plunder of their institutes,
* Continue their work with minimal interruption, and
* Protect themselves from prosecution for any political acts of the past.[Heinemann-Grüder, 2002, 44.]
Before the end of World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, Thiessen, a member of the '' Nationalsozialistische Deutsche Arbeiterpartei
The Nazi Party, officially the National Socialist German Workers' Party (german: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported th ...
'', had Communist contacts. On 27 April 1945, Thiessen arrived at von Ardenne's institute in an armored vehicle with a major of the Soviet Army, who was also a leading Soviet chemist.[Oleynikov, 2000, 5.]
All four of the pact members were taken to the Soviet Union along with colleagues from their institutes. Hertz was made head of Institute G, in Agudseri (Agudzery),[Oleynikov, 2000, 11-12.][Naimark, 1995, 213.] about 10 km southeast of Sukhumi
Sukhumi (russian: Суху́м(и), ) or Sokhumi ( ka, სოხუმი, ), also known by its Abkhaz name Aqwa ( ab, Аҟәа, ''Aqwa''), is a city in a wide bay on the Black Sea's eastern coast. It is both the capital and largest city of ...
and a suburb of Gul’rips (Gulrip’shi). Topics assigned to Gustav Hertz's Institute G included:
* Separation of isotopes by diffusion in a flow of inert gases, for which Gustav Hertz was the leader,
* Development of a condensation pump, for which Justus Mühlenpfordt was the leader,
* Design and build a mass spectrometer for determining the isotopic composition of uranium, for which Werner Schütze was the leader,
* Development of frameless (ceramic) diffusion partitions for filters, for which Reinhold Reichmann was the leader, and
* Development of a theory of stability and control of a diffusion cascade, for which Heinz Barwich
Heinz Barwich (22 July 1911 – 10 April 1966) was a German nuclear physicist. He was deputy director of the Siemens Research Laboratory II in Berlin. At the close of World War II, he followed the decision of Gustav Hertz, to go to the So ...
was the leader.[Oleynikov, 2000, 12-13 and 18.][Kruglov, 2002, 131.]
Barwich had been deputy to Hertz at Siemens.[Naimark, 1995, 209.] Other members of Institute G were Werner Schütze,[Oleynikov, 2000, 13 and 18.] Karl-Franz Zühlke,[Maddrell, 2006, 179-180.] and Werner Hartmann. Von Ardenne was made head of Institute A, in Sinop, a suburb of Sukhumi
Sukhumi (russian: Суху́м(и), ) or Sokhumi ( ka, სოხუმი, ), also known by its Abkhaz name Aqwa ( ab, Аҟәа, ''Aqwa''), is a city in a wide bay on the Black Sea's eastern coast. It is both the capital and largest city of ...
. Volmer went to the Nauchno-Issledovatel’skij Institut-9 (NII-9, Scientific Research Institute No. 9),[Today, NII-9 is the Bochvar All-Russian Scientific Research Institute of Inorganic Materials, Bochvar VNIINM. See Oleynikov, 2000, 4.] in Moscow; he was given a design bureau to work on the production of heavy water.[Oleynikov, 2000, 13.] At Institute A, Thiessen became leader for developing techniques for manufacturing porous barriers for isotope separation.[Oleynikov, 2000, 11.]
The importance of certain scientists and their staffs to the Soviet atomic bomb project was underscored by their being flown to the Soviet Union shortly after the fall of Berlin, announced by the Soviets on 2 May 1945. For example, Manfred von Ardenne
Manfred von Ardenne (20 January 1907 – 26 May 1997) was a German researcher and applied physicist and inventor. He took out approximately 600 patents in fields including electron microscopy, medical technology, nuclear technology, plasma physics ...
and his staff were flown to Moscow on 21 May and Nikolaus Riehl
Nikolaus Riehl (24 May 1901 – 2 August 1990) was a German nuclear physicist. He was head of the scientific headquarters of Auergesellschaft. When the Russians entered Berlin near the end of World War II, he was invited to the Soviet Union, whe ...
and his staff were flown to Moscow on 9 July. Hartmann and his research staff were flown there on 13 June. Hartmann worked in Agudseri (Agudzery), at Institute G, directed by Gustav Hertz
Gustav Ludwig Hertz (; 22 July 1887 – 30 October 1975) was a German experimental physicist and Nobel Prize winner for his work on inelastic electron collisions in gases, and a nephew of Heinrich Rudolf Hertz.
Biography
Hertz was born in Hamb ...
.
In Germany again
In preparation for release from the Soviet Union, it was standard practice to put German scientists into quarantine for a few years if they worked on the Soviet atomic bomb project.[Riehl and Seitz, 1996, 137-139.] Once these talented and capable scientists arrived in the German Democratic Republic
German(s) may refer to:
* Germany (of or related to)
**Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ger ...
(GDR, german: Deutsche Demokratische Republik (DDR)), they were plied with high salaries, honors, and good positions as inducements to keep them in the GDR for maintenance of information security (counterintelligence
Counterintelligence is an activity aimed at protecting an agency's intelligence program from an opposition's intelligence service. It includes gathering information and conducting activities to prevent espionage, sabotage, assassinations or o ...
) and both technological and economic development of the GDR.[Maddrell, 2006, 176-181.]
Hartmann and his group were released from the Soviet Union in March 1955, and they went to the GDR.[ There, Hartmann demonstrated his scientific and managerial talents in a number of ways, including the founding of an institute which became a leading institute for ]microelectronics
Microelectronics is a subfield of electronics. As the name suggests, microelectronics relates to the study and manufacture (or microfabrication) of very small electronic designs and components. Usually, but not always, this means micrometre-s ...
in the entire Soviet Bloc
The Eastern Bloc, also known as the Communist Bloc and the Soviet Bloc, was the group of socialist states of Central and Eastern Europe, East Asia, Southeast Asia, Africa, and Latin America under the influence of the Soviet Union that existed du ...
. However, his apolitical nature was the start of a problem for him in the Soviet Union and it followed him into the GDR and magnified under the ruling Party there.[Augustine, 2007, 178-189.]
In 1955, Hartmann founded and became the director of the ''Volkseigener Betrieb
The Publicly Owned Enterprise (german: Volkseigener Betrieb; abbreviated VEB) was the main legal form of industrial enterprise in East Germany. They were all publicly owned and were formed after mass nationalisation between 1945 and the early 1960 ...
Vakutronik Dresden'' (VEB Dresden, Dresden Vakutronik People's Enterprise); later, it became the ''Volkseigener Betrieb Rundfunk-und-Fernmeldewesen Meßelektronik Dresden'' (''VEB RFT Meßelektronik Dresden'', Dresden Radio and Telecommunications Technology Measurements Electronics People's Enterprise).[Elektronik in Dresden. Eine Chronik.]
.
In order to teach at a German university, one had to have a doctorate as well as complete Habilitation
Habilitation is the highest university degree, or the procedure by which it is achieved, in many European countries. The candidate fulfills a university's set criteria of excellence in research, teaching and further education, usually including ...
; Hartmann completed the latter, in 1956, at the ''Technische Hochschule Dresden'' (after reorganization and renaming in 1961: ''Technische Universität Dresden
TU Dresden (for german: Technische Universität Dresden, abbreviated as TUD and often wrongly translated as "Dresden University of Technology") is a public research university, the largest institute of higher education in the city of Dresden, th ...
''), where he then also became a professor of ''Kernphysikalische Elektronik''. From 1956 and 1957, the ''Technische Hochschule Dresden'' had on the faculty other notable German scientists who had returned from working on the Soviet atomic bomb project, including Heinz Barwich
Heinz Barwich (22 July 1911 – 10 April 1966) was a German nuclear physicist. He was deputy director of the Siemens Research Laboratory II in Berlin. At the close of World War II, he followed the decision of Gustav Hertz, to go to the So ...
(Institute G), Heinz Pose and Ernst Rexer (Laboratory V), and Josef Schintlmeister
Josef 'Sepp' Schintlmeister (16 June 1908, Radstadt – 14 August 1971, Hinterglemm) was an Austrian-German nuclear physicist and alpinist from Radstadt. During World War II, he worked on the German nuclear energy project, also known as the Ur ...
(Laboratory of Measuring Instruments.)
In 1959 and 1970, Hartmann was awarded the ''Nationalpreis''.[
][Augustine stated that Hartmann won the National Prize twice: See Augustine, 2007, 184.]
In 1961, Hartmann founded the ''Arbeitsstelle für Molekularelektronik Dresden'' (AME, Dresden Office for Microelectronics; 1969 renamed in AMD), which became a leading institute for microelectronics
Microelectronics is a subfield of electronics. As the name suggests, microelectronics relates to the study and manufacture (or microfabrication) of very small electronic designs and components. Usually, but not always, this means micrometre-s ...
in the entire Soviet Bloc
The Eastern Bloc, also known as the Communist Bloc and the Soviet Bloc, was the group of socialist states of Central and Eastern Europe, East Asia, Southeast Asia, Africa, and Latin America under the influence of the Soviet Union that existed du ...
. Hartmann's AMD is not to be confused with AMD Saxony, which is a facility belonging to the American company Advanced Micro Devices
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets. While it initially manufa ...
. In 1987, Hartmann's institute was recently renamed in ''Zentrum Mikroelektronik Dresden.'' ZMD produced the GDR's first 1-megabyte DRAM U61000 in 1988 and is today a fabless semiconductor company named ZMDI
Zentrum Mikroelektronik Dresden (ZMD) was regarded as the heart of East Germany's microelectronics research in the 1980s as well as its most advanced integrated circuit manufacturer. Together with TU Dresden and VEB Spurenmetalle Freiberg, ZMD f ...
Hartmann had been under surveillance in the Soviet Union, since 1947, for “anti-Soviet statements and attitudes.” After his return to Germany, he was the subject of the intelligence investigation ''Tablette'' (Tablet). Hartmann's reading of foreign scientific journals, as well as his management style, brought suspicion on him and accusations of introducing “managerial methods of capitalist countries.” From his apolitical nature, he disliked the way the ''Sozialistische Einheitspartei Deutschlands
The Socialist Unity Party of Germany (german: Sozialistische Einheitspartei Deutschlands, ; SED, ), often known in English as the East German Communist Party, was the founding and ruling party of the German Democratic Republic (GDR; East Germ ...
'' (SED, Socialist Unity Party of Germany – the ruling party in the GDR) characterized and split the German people into two categories, either “party members” or “non-members”. This resulted in allegations of “non-political conformity” and “disloyalty to the SED”, a direct result from the SED's suspicious view of members of the industrial elite who were not members of the Party. Furthermore, it was even alleged that he spent too much time writing scientific articles. In 1966, he fought receipt of a Soviet security clearance, as he feared this would limit his travel in and scientific contact with the West. In 1974, Hartmann was an object of the security investigation ''Molekül'' (Molecule) by the ''Ministerium für Staatssicherheit'' (MfS, Ministry for State Security) – the Stasi
The Ministry for State Security, commonly known as the (),An abbreviation of . was the state security service of the East Germany from 1950 to 1990.
The Stasi's function was similar to the KGB, serving as a means of maintaining state author ...
.[
]
In 1974, Hartmann was removed from his positions, significantly downgraded in position, salary (84% cut), and pension rights, and sent to work as a staff scientist at the ''VEB Spurenmetalle Freiberg''. He was repeatedly taken in for lengthy interrogations during the period 1974 to 1976, and he was threatened with trial for “economic crimes.” However, no trial was to take place.[
Hartmann retired in 1977.][
Hartmann died in ]Dresden
Dresden (, ; Upper Saxon: ''Dräsdn''; wen, label=Upper Sorbian, Drježdźany) is the capital city of the German state of Saxony and its second most populous city, after Leipzig. It is the 12th most populous city of Germany, the fourth ...
on 8 March 1988, due to complications after prostate surgery.[
]
Honors
*National Prize – 1959 and 1970
*The ''Werner-Hartmann-Preis für Chipdesign'' (Werner Hartmann Prize for Chip Design) is awarded by the ''Zentrum Mikroelektronik Dresden'' ( ZMD, Dresden Center for Microelectronics)
Notes
References
* Ardenne, Manfred von ''Erinnerungen, fortgeschrieben. Ein Forscherleben im Jahrhundert des Wandels der Wissenschaften und politischen Systeme.'' (Droste, 1997)
*Augustine, Dolores L. ''Red Prometheus: Engineering and Dictatorship in East Germany, 1945-1990'' (MIT, 2007)
*Dieckmann, Christop (2002). "Vernichtung eines Unpolitischen", "Die Zeit
PDF
o
HTML
Retrieved on 2008-01-17.
*Kruglov, Arkadii ''The History of the Soviet Atomic Industry'' (Taylor and Francis, 2002)
*Maddrell, Paul "Spying on Science: Western Intelligence in Divided Germany 1945–1961" (Oxford, 2006)
*Naimark, Norman M. ''The Russians in Germany: A History of the Soviet Zone of Occupation, 1945-1949'' (Belknap, 1995)
*Oleynikov, Pavel V. ''German Scientists in the Soviet Atomic Project'', ''The Nonproliferation Review'' Volume 7, Number 2, 1 – 30
(2000)
The author has been a group leader at the Institute of Technical Physics of the Russian Federal Nuclear Center in Snezhinsk (Chelyabinsk-70).
* Riehl, Nikolaus and Frederick Seitz
Frederick Seitz (July 4, 1911 – March 2, 2008) was an American physicist and a pioneer of solid state physics and lobbyist.
Seitz was the 4th president of Rockefeller University from 1968–1978, and the 17th president of the United States Nat ...
''Stalin’s Captive: Nikolaus Riehl and the Soviet Race for the Bomb'' (American Chemical Society and the Chemical Heritage Foundations, 1996) .
External links
*Dieckmann, Christop "Vernichtung eines Unpolitischen", "Die Zeit
(2002)
– PDF o
(2002)
– HTML
Habilitationsschrift
- "Technische Hochschule Dresden", 1956
Physik und Physiker
- "Technische Hochschule Dresden"
- ''Professor Werner Hartmann - Triumph und Niederlage des Begründers der DDR-Mikroelektronik''
- ''Dresdens Aufstieg Chipmetropole: Werner Hartmann im Porträt''
{{DEFAULTSORT:Hartmann, Werner
1912 births
1988 deaths
Scientists from Berlin
20th-century German physicists
People from the Province of Brandenburg
East German scientists
German expatriates in the Soviet Union