Columbia subject headings:
Cambodia--History--Civil War, 1970-1975.
Cambodia--Politics and government--1975-1979.
Cambodian-Vietnamese Conflict, 1977-1991.
Harvard subject headings:
Cambodia--History--1975-
Cambodia--History--Civil War, 1970-1975
Princeton subject headings:
Cambodia--History--Civil War, 1970-1975.
Cambodia--Politics and government--1975-1979.
Cambodian-Vietnamese Conflict, 1977-1991.