000 00248nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _aGAUR(Y.N), KOUL(C.L),
245 0 _aENGINEERING MAHSMATICS
250 _a9
260 _bJPH
942 _2ddc
_cBTECH
999 _c6422
_d6422