Columbia subject headings:
Harvard subject headings:
Atrocities--Russia (Federation)--Moscow.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Political persecution--Russia (Federation)--Moscow.
Political persecution--Soviet Union.
Political prisoners--Soviet Union--Biography
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.
Princeton subject headings:
Atrocities--Russia (Federation)--Moscow.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Political persecution--Russia (Federation)--Moscow.
Political persecution--Soviet Union.
Political prisoners--Soviet Union--Biography.
Soviet Union--Politics and government--1917-1936.
Soviet Union--Politics and government--1936-1953.