Columbia subject headings:
Vietnam War, 1961-1975--Congresses.
Vietnam War, 1961-1975--United States--Congresses.
Harvard subject headings:
Vietnam War, 1961-1975--Congresses
Vietnam War, 1961-1975--United States--Congresses.
Princeton subject headings:
Vietnam War, 1961-1975--Congresses.
Vietnam War, 1961-1975--United States--Congresses.