Columbia subject headings:
Government information--Soviet Union--History.
Information policy--Political aspects--Soviet Union.
Official secrets--Soviet Union.
Rossiĭskai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov)--Information services--History.
Secrecy--Law and legislation--Soviet Union--History.
Security classification (Government documents)--Soviet Union--History.
Vsesoi︠u︡znai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov) (1925-1952)--Information services--History.
Harvard subject headings:
Government information--Soviet Union--History.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--History--Sources.
Official secrets--Soviet Union.
Political parties
Secrecy--Law and legislation--Soviet Union--History.
Security classification (Government documents)--Soviet Union--History.
Soviet Union--Politics and government--Sources.
Vsesoi︠u︡znai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov) (1925-1952)--History--Sources.
Princeton subject headings:
Government information--Soviet Union--History.
Information policy--Political aspects--Soviet Union.
Official secrets--Soviet Union.
Rossiĭskai︠a︡ kommunisticheskai︠a︡ partii︠a︡ (bolʹshevikov)--Information services--History.
Secrecy--Law and legislation--Soviet Union--History.
Security classification (Government documents)--Soviet Union--History.