000 00258nam a2200109Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aGangadharan
245 0 _aEngineering mathematics
260 _aNew Delhi
_bPHI
650 _aMATHEMATICS
942 _2ddc
_01
999 _c69539
_d69539