Columbia subject headings:
Harvard subject headings:
United States. Marine Corps--Civic action.
United States. Marine Corps--History--Vietnam War, 1961-1975.
Vietnam War, 1961-1975--Civilian relief
Princeton subject headings:
United States. Marine Corps--Civic action.
United States. Marine Corps--History--Vietnamese Conflict, 1961-1975.
Vietnam War, 1961-1975--Civilian relief.