Hospers, John, 1918- Human conduct : problems of ethics / John Hospers. - Shorter ed. - New York : Harcourt Brace Jovanovich, 1972. - xii, 462 p. ; 24 cm. Includes bibliographical references and index. ISBN: 0155400932 LCCN: 75-185802 Subjects--Topical Terms: Ethics.