00298nam a2200109Ia 450000500170000000800410001708200160005810000410007424500220011526000430013730000080018020260205051238.0260111s9999||||xx |||||||||||||| ||und||  a420  P887 O  aPrasad,Hari Mohan and Sinha,uma Rani 0aObjective english  aNew DelhibTata Mcgraw hill pub.c2000  a685