Columbia subject headings:
Economic sanctions, American--Vietnam.
Embargo.
United States--Foreign economic relations--Vietnam.
Vietnam--Foreign economic relations--United States.
Harvard subject headings:
Economic sanctions, American--Vietnam.
Embargo.
United States--Foreign economic relations--Vietnam.
Vietnam--Foreign economic relations--United States.
Princeton subject headings:
Economic sanctions, American--Vietnam.
Embargo.
United States--Foreign economic relations--Vietnam.
Vietnam--Foreign economic relations--United States.