Columbia subject headings:
Cambodia--History--1975-1979.
Food relief--Cambodia.
Political atrocities--Cambodia.
Refugees--Cambodia.
Harvard subject headings:
Cambodia--History--1975-
Cambodia--History--1975-1979.
Food relief--Cambodia.
Political atrocities--Cambodia
Refugees--Cambodia
Princeton subject headings:
Cambodia--History--1975-1979.
Cambodia--History--1979-.
Food relief--Cambodia.
Political atrocities--Cambodia.
Refugees--Cambodia.