Spinoza, Baruch (1632-1677) On the Improvement of the understanding the ethics correspondance / [Texte imprimé] : Benedict de Spinoza ; transl. from the latin with an introd. by R. H. M. Elwes - New York: Dover Publications, 1955 - 1 vol. (XXII-420 p.) ; 21 cm ISBN: 0-468-20250-X Dewey Class. No.: 199.492