000 003150000a22001330004500
041 _aENG
080 _aB321 ?
082 _aB321 ?
100 _aGOEL (B S)
700 _aSUNIL KUMAR
245 _aDifference calculus (for various Indian universities.)
260 _aMeerut
_bPragati
_c?
650 _aDIFFERENTIAL
999 _c253504
_d253504