Drucker, Peter F. 1909-2005. Management Challenges for the 21st Century / Management Challenges for the Twenty-First Century Peter F. Drucker. - 1st ed. - New York : HarperBusiness, c1999. - xi, 207 p. ; 24 cm. Includes Index. ISBN: 0887309984 LCCN: 99017087 Subjects--Topical Terms: Management--Forecasting.Twenty-First Century--Forecasts. LC Class. No.: HD30.27 / .D78 1999 Dewey Class. No.: 658 DRU