Columbia subject headings:
Communist countries--Foreign economic relations--United States.
Foreign licensing agreements.
Foreign trade regulation--United States.
United States--Foreign economic relations--Communist countries.
Harvard subject headings:
Communist countries--Foreign economic relations--United States.
Foreign licensing agreements.
Foreign trade regulation--United States.
United States--Foreign economic relations--Communist countries.
Princeton subject headings:
Communist countries--Foreign economic relations--United States.
Foreign licensing agreements.
Foreign trade regulation--United States.
United States--Foreign economic relations--Communist countries.