00226nam a22000977a 4500020001800000082001000018100002600028245002500054260004100079300000800120  a9789327225877  a338.7  aLEKHI RKaAGGARWAL SL  aMANAGERIAL ECONOMICS  aNEW DELHIbKALYANI PUBLICATIONc2016  a419