Columbia subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994.
United States--Foreign relations--1969-1974.
Harvard subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994
United States--Foreign relations--1969-1974.
Vietnam War, 1961-1975.
Princeton subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994.
United States--Foreign relations--1969-1974.