Columbia subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994--Impeachment.
Watergate Affair, 1972-1974.
Harvard subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994--Impeachment.
United States--History--1969-
United States--History--20th century.
United States--Politics and government--1969-1974.
United States--Politics and government--1974-1977.
Watergate Affair, 1972-1974
Princeton subject headings:
Nixon, Richard M. (Richard Milhous), 1913-1994.
United States--Politics and government.
Watergate Affair, 1972-1974.