Columbia subject headings:
Dissenters--Soviet Union.
Soviet Union--History--1925-1953.
Harvard subject headings:
Dissenters--Soviet Union
Political persecution--Soviet Union.
Soviet Union--History--1925-1953.
Princeton subject headings:
Communists--Soviet Union--Biography.
Political atrocities--Soviet Union.
Political persecution--Soviet Union.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.