Columbia subject headings:
Communism and society.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Party work.
Latvia--Politics and government.
Latvia--Social conditions.
Harvard subject headings:
Communism and society--Congresses.
Communism and society.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Party work--Congresses.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Latvia--Politics and government--Congresses.
Latvia--Politics and government.
Latvia--Social conditions--Congresses.
Latvia--Social conditions.
Princeton subject headings: