Logic and reality in Leibniz's metaphysics / G. H. R. Parkinson. Parkinson, G. H. R. (George Henry Radcliffe) Leibniz, Gottfried Wilhelm, Freiherr von, 1646-1716. 193 PAL Bibliographical references included in footnotes. Oxford : Clarendon Press, 1965. 1965. 1965 Text x, 196 p.; eng