Columbia subject headings:
Harvard subject headings:
United States--Foreign relations--1977-1981.
United States--Foreign relations--1981-1989.
United States--Politics and government--1977-1981.
United States--Politics and government--1981-1989
Princeton subject headings:
United States--Foreign relations--1977-1981.
United States--Foreign relations--1981- .
United States--Politics and government--1977-1981.
United States--Politics and government--1981- .