Columbia subject headings:
United States--Foreign relations--1963-1969.
Vietnam War, 1961-1975--Public opinion--United States.
Harvard subject headings:
Public opinion--United States
United States--Foreign relations--1963-1969.
Vietnam War, 1961-1975--Public opinion
Vietnam War, 1961-1975--Public opinion--United States.
Princeton subject headings:
United States--Foreign relations--1963-1969.
Vietnam War, 1961-1975--United States--Public opinion.