00365nam a2200097Ia 4500008004100000041000800041100001400049245016000063260003700223300000700260230822s1999    xx            000 0 und d  aeng  aHELLER P.  aESSENTIAL MANAGERS, MAKING DECISIONS (PARTICIPATING FORECASTING LEARNING RISKS ASSESSING PROCESS TRUST - OBJECTIVES ROLES FOCUS- TIMING TIPS SYSTEMS AIMS .  bDORLING  KINDERSLEY LONDONc1999  a72