Columbia subject headings:
Harvard subject headings:
Descartes, René, 1596-1650.
Force and energy--Philosophy.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
Metaphysics--History
Princeton subject headings:
Descartes, René, 1596-1650.
Force and energy--Philosophy.
Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716.
Metaphysics--History.