Columbia subject headings:
Bradley, F. H. (Francis Herbert), 1846-1924.
Knowledge, Theory of.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Harvard subject headings:
Bradley, F. H. (Francis Herbert), 1846-1924.
Knowledge, Theory of.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Princeton subject headings: