00317nam a2200121Ia 45000030006000000080041000060400015000471000038000622450057001002600009001575460012001660050017001780STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRay, M.; Sharma, H.S.; Seth, S.S.  aDifferential calculus for BA BSc and Honour students  c1981  aEnglish20220125165948.0