Columbia subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Metaphysics.
Strawson, P. F.
Harvard subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716--Metaphysics.
Metaphysics
Strawson, P. F.
Princeton subject headings:
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Strawson, P. F.