Columbia subject headings:
Carter, Jimmy, 1924-
Developing countries--Foreign relations--United States.
Reagan, Ronald.
United States--Foreign relations--1977-1981.
United States--Foreign relations--1981-1989.
United States--Foreign relations--Developing countries.
Harvard subject headings:
Carter, Jimmy, 1924-
Developing countries--Foreign relations--United States.
Reagan, Ronald
United States--Foreign relations--1977-1981.
United States--Foreign relations--1981-1989.
United States--Foreign relations--1989-
United States--Foreign relations--Developing countries.
Princeton subject headings:
Developing countries--Foreign relations--United States.
United States--Foreign relations--Developing countries.