Columbia subject headings:
Vietnam War, 1961-1975--Peace.
Vietnam War, 1961-1975--United States.
Harvard subject headings:
Vietnam War, 1961-1975--Peace
Vietnam War, 1961-1975--United States
Princeton subject headings:
Agreement on Ending the War and Restoring Peace in Viet-Nam
Vietnam War, 1961-1975--Peace.
Vietnam War, 1961-1975--United States.