Columbia subject headings:
Harvard subject headings:
Central America--Foreign relations--Soviet Union--Congresses.
Central America--Foreign relations--United States--Congresses.
Middle East--Foreign relations--Soviet Union--Congresses.
Middle East--Foreign relations--United States--Congresses.
Soviet Union--Foreign relations--Central America--Congresses.
Soviet Union--Foreign relations--Middle East--Congresses.
Soviet Union--Foreign relations--United States--Congresses.
United States--Foreign relations--Central America--Congresses.
United States--Foreign relations--Middle East--Congresses.
United States--Foreign relations--Soviet Union--Congresses.
Princeton subject headings:
Central America--Foreign relations--Soviet Union--Congresses.
Central America--Foreign relations--United States--Congresses.
Middle East--Foreign relations--Soviet Union--Congresses.
Middle East--Foreign relations--United States--Congresses.
Soviet Union--Foreign relations--Central America--Congresses.
Soviet Union--Foreign relations--Middle East--Congresses.
Soviet Union--Foreign relations--United States--Congresses.
United States--Foreign relations--Central America--Congresses.
United States--Foreign relations--Middle East--Congresses.
United States--Foreign relations--Soviet Union--Congresses.