Columbia subject headings:
Yemen, South--Economic conditions.
Yemen, South--Politics and government.
Yemen, South--Social conditions.
Harvard subject headings:
Yemen (People's Democratic Republic)--Politics and government.
Yemen, South--Economic conditions.
Yemen, South--Social conditions.
Princeton subject headings:
Yemen (People's Democratic Republic)--Economic conditions.
Yemen (People's Democratic Republic)--Politics and government.
Yemen (People's Democratic Republic)--Social conditions.