Columbia subject headings:
Authors, Exiled--Soviet Union--20th century.
Authors, German--Soviet Union--20th century.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Soviet Union--Politics and government--1917-1936.
Terrorism--Soviet Union.
Harvard subject headings:
Authors, Exiled--Soviet Union--20th century.
Authors, German--Soviet Union--20th century.
Dissenters--Germany--History--20th century.
Exiles--Germany--History--20th century.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Political purges--Soviet Union.
Political refugees--Soviet Union.
Politics and literature--Soviet Union.
Soi͡uz pisateleĭ SSSR. Deutsche Sektion.
Soviet Union--Politics and government--1917-1936.
Soviet literature--German authors--Political aspects.
Terrorism--Soviet Union
Princeton subject headings:
Authors, German--Biography.
Authors, German--Soviet Union--Political and social views.
Censorship--Soviet Union.