Columbia subject headings:
Cambodia--History--1975-1979.
Laos--History--1975-
Vietnam--History--1975-
Harvard subject headings:
Cambodia--History--1975-
Cambodia--History--1975-1979.
Cambodia--History--1979-1993
Laos--History--1975-
Vietnam--History--1975-
Princeton subject headings:
Communism--Indochina.
Indochina--Politics and government.
National liberation movements--Indochina.