Columbia subject headings:
Soviet Union--Politics and government--1936-1953.
Trials (Political crimes and offenses)--Europe, Eastern.
Harvard subject headings:
Communist party purges--History.
Political purges--Europe, Eastern--History.
Soviet Union--Politics and government--1936-1953.
Trials (Political crimes and offenses)--Europe, Eastern.
Princeton subject headings:
Soviet Union--Politics and government--1936-1953.
Trials (Political crimes and offenses)--Europe, Eastern.