Columbia subject headings:
Communism.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Party work.
Marxian economics.
Technological innovations.
Harvard subject headings:
Communism.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Marxian economics.
Technological innovations
Princeton subject headings:
Communism.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Marxian economics.
Technological innovations.