00402nam a2200145Ia 4500008004100000020001500041041000800056082001700064100002000081245006700101250000600168260003900174300001200213650003100225210716s2005    xx            000 0 und d  a8129700875  aeng  a658.314 BECR  aBeck, Robert C.  aMotivation: theories and principles.bTheories and principles.  a4  aNew DelhibPearson Educationc2005  axvi,475  aHuman Resource Development