000 00268nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aN P Bali
245 0 _aComprehensive engineering mathematics
260 _aNew Delhi
_bLaxmi Pub
_c1989
650 _aMath
942 _cBK
999 _c7649
_d7649