00409nam a2200145Ia 4500100001800000942000700018654000900025245001500034260003600049082001100085300000800096546001200104999001700116952013000133  aKhanna/ O.R.   cBK  awork  aWork Study  bDhanpat Rai & SonsaDelhic1979  a658.54  a196  aENGLISH  c20408d20408  001040708AFTaCRCEbCRCEc1442 | 59d2023-03-17eUBSg30.00iT-194l0o658.54 pAFT2967r2023-03-17v30.00w2023-03-17yBK