Drucker, Peter Ferdinand, Managing in turbulent times Peter F. Drucker. - 1st Harper Colophon ed. - New York Harper & Row 1985, c1980. - x, 239 p. 21 cm. - Harper & Row management library . "Harper Colophon books." Includes index. ISBN: 0060912081 (pbk.) LCCN: Subjects--Topical Terms: Industrial managementManagement National Agricultural Library Call No.: HD31.D78 / 1985