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020 _a9789332550445
041 _aeng
082 _a620.0015
_bT16 ECG
100 _aECG
_916846
245 0 _aGATE 2017: engineering mathematics
260 _bECG Publication
_aChandigarh
_c2016
942 _cBK
999 _c28416
_d28416