Ethics preceded by "On the improvement of the understanding"

Spinoza, Benedictus de 1632-1677. Ethics preceded by "On the improvement of the understanding" / Benedictus de Spinoza ; edited with an introduction by James Gutmann . - New York : Hafner Publishing Company, 1949 . - xxxv, 294 p. 20 cm. - (Hafner library of classics ; no. 11 )
К.: Бібліогр. : c. xxxv