Columbia subject headings:
Harvard subject headings:
China--Foreign relations--United States--Case studies.
Soviet Union--Foreign relations--United States--Case studies.
United States--Foreign relations--China--Case studies.
United States--Foreign relations--Soviet Union--Case studies.
Princeton subject headings:
China--Foreign relations--United States--Case studies.
Soviet Union--Foreign relations--United States--Case studies.
United States--Foreign relations--China--Case studies.
United States--Foreign relations--Soviet Union--Case studies.