Columbia subject headings:
Cambodia--History--1953-1975.
Cambodia--History--1975-1979.
Cambodia--Politics and government.
Communism--Cambodia--History.
Harvard subject headings:
Cambodia--History--1953-1975.
Cambodia--History--1975-
Cambodia--History--1975-1979.
Communism--Cambodia--History.
Parti communiste du Kampuchea.
Princeton subject headings: