Columbia subject headings:
Brandt, Richard B.
Ethics.
Frankena, William K.
Stevenson, Charles L. (Charles Leslie), 1908-1979.
Harvard subject headings:
Brandt, Richard B.
Ethics.
Frankena, William K.
Stevenson, Charles L. (Charles Leslie), 1908-1979
Princeton subject headings:
Brandt, Richard Booker, 1910-.
Ethics.
Fiction.
Frankena, William K.
Stevenson, Charles L. (Charles Leslie), 1908-1979.