Drucker, Peter F. (Peter Ferdinand), 1909-2005 Managing in turbulent times / Peter F Drucker. - 1st ed. - New York ; New Delhi : Harper & Row ; Allied, 1980. - 233 p. ; 22 cm. ISBN: 9780060110949 Subjects--Topical Terms: Industrial management.Management. LC Class. No.: HD31 / .D78 1990