000 00263 a2200109 4500
020 _a9788121904711
100 _aNARAYAN, SHANTI/ MITTAL, P.K.
245 _aDIFFERENTIAL CALCULUS
250 _a1
260 _bSCHAND AND COMPANY LTD., NEW DELHI
_c2022
942 _cBK
999 _c89016
_d89016