Villalpando, José Manuel Manual moderno de ‚tica / José Manuel Villalpando - 3 - México : Porrúa - xix, 391 p. / 21 cm. ISBN: 970-07-1109-9 Subjects--Topical Terms: 1.ETICA LC Class. No.: BJ71 V5 1974 Dewey Class. No.: 170 V714m