Drucker, Peter F. 1909-2005. Management challenges for the 21st century / Management challenges for the twenty-first century Peter F. Drucker. - New York : HarperBusiness, c1999 [reprinted 2000] - xii, 205 p. : 24 cm. Includes index. ISBN: 0750644567 Subjects--Topical Terms: Management--Forecasting.Twenty-first century--Forecasts. Dewey Class. No.: 658 / DRM 2000