Columbia subject headings:
Communism.
Europe--Civilization.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1918-1945.
Fascism.
Syndicalism.
Harvard subject headings:
Communism
Europe--Civilization.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1918-1945.
Fascism
Syndicalism.
Princeton subject headings:
Communism.
Europe--Civilization.
Europe--Economic conditions--1918-1945.
Europe--Politics and government--1918-1945.
Fascism.
Syndicalism.