Columbia subject headings:
Communism--Soviet Union.
Communist trials--Soviet Union.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Stalin, Joseph, 1878-1953.
Harvard subject headings:
Communism--Soviet Union
Communist trials--Soviet Union.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Stalin, Joseph, 1878-1953
Princeton subject headings: