Lewis, Clarence Irving Values and imperatives studies in ethics. Edited by John Lange. - Stanford, Calif. Stanford University Press 1969. - xv, 201 p. 23 cm. Bibliographical footnotes. LCCN: 69013181 Subjects--Topical Terms: Ethics LC Class. No.: BJ1012 / .L48 1969 Dewey Class. No.: 170