Columbia subject headings:
United States--Politics and government--1963-1969.
United States--Politics and government--1969-1974.
Vietnam War, 1961-1975--Public opinion--United States.
Vietnam War, 1961-1975--United States.
Harvard subject headings:
United States--Politics and government--1963-1969.
United States--Politics and government--1969-1974.
Vietnam War, 1961-1975--United States
Vietnam War, 1961-1975--United States--Public opinion.
Vietnam War, 1961-1975.
Princeton subject headings:
Vietnam War, 1961-1975.