Columbia subject headings:
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Soviet Union--Politics and government--1936-1953.
Stalin, Joseph, 1878-1953.
Terrorism--Soviet Union.
Harvard subject headings:
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Political purges--Soviet Union.
Soviet Union--Politics and government--1936-1953.
Stalin, Joseph, 1878-1953
Stalin, Joseph, 1878-1953.
Terrorism--Soviet Union
Terrorism--Soviet Union--History.
Princeton subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Soviet Union--Politics and government--1936-1953.
Stalin, Joseph, 1878-1953.
Terrorism--Soviet Union--History--20th century.