00353nam a2200133Ia 4500008004100000041000800041082001300049100004200062245004100104250000600145260003300151300001100184650002400195210716s1984    xx            000 0 und d  aeng  a003 ACKR  aAckoff, Russell L;Sasieni Maurick, W.  aFundamentals of operations research.  a1  aNew DelhibWiley Indiac1984  aix,455  aOperations Research