Columbia subject headings:
Cambodia--Politics and government--1975-1979.
Peaceful change (International relations)
United Nations--Armed Forces--Cambodia.
Harvard subject headings:
Cambodia--Politics and government--1975-
Cambodia--Politics and government--1979-1993
Peaceful change (International relations)
United Nations--Armed Forces--Cambodia.
United Nations--Armed Forces--Foreign service--Cambodia.
United States--Armed Forces--Foreign service--Cambodia.
Princeton subject headings:
Cambodia--Politics and government--1975-.
Peaceful change (International relations)
United Nations--Armed Forces--Foreign service--Cambodia.
United States--Armed Forces--Foreign service--Cambodia.