Columbia subject headings:
Biographies.
Ehrlichman, John.
Nixon, Richard M. (Richard Milhous), 1913-1994.
Presidents--United States--Staff--Biography.
United States--Politics and government--1969-1974.
Watergate Affair, 1972-1974.
Harvard subject headings:
Ehrlichman, John.
Nixon, Richard M. (Richard Milhous), 1913-1994
Presidents--United States--Staff--Biography.
United States--Politics and government--1969-1974.
Watergate Affair, 1972-1974
Princeton subject headings:
Ehrlichman, John.
Nixon, Richard M. (Richard Milhous), 1913-1994.
Presidents--United States--Staff--Biography.
United States--Politics and government--1969-1974.
Watergate Affair, 1972-1974.