Columbia subject headings:
Harvard subject headings:
Legislative hearings
United States. Department of Defense
Vietnam War, 1961-1975--Missing in action--United States
Vietnam War, 1961-1975--Prisoners and prisons, North Vietnamese
Princeton subject headings:
United States. Department of Defense
Vietnam War, 1961-1975--Missing in action--United States.
Vietnam War, 1961-1975--Prisoners and prisons, North Vietnamese.