Columbia subject headings:
Harvard subject headings:
Biographies
Metaphysics
Philosophy, German
Political science--Philosophy
Ritter, Joachim, 1903-1974
Ritter, Joachim, 1903-1974--Aesthetics.
Princeton subject headings:
Metaphysics.
Philosophy, German.
Political science--Philosophy.
Ritter, Joachim, 1903-1974--Aesthetics.
Ritter, Joachim, 1903-1974.