TY - BOOK AU - Drucker,Peter F. TI - Management challenges for the 21st century SN - 0887309984 AV - HD30.27 .D78 1999 U1 - 658 21 PY - 1999/// CY - New York PB - HarperBusiness KW - Management KW - Forecasting KW - Twenty-first century KW - Forecasts N1 - Includes index UR - l ER -