000 00249nam a2200109Ia 4500
008 200701s1997 xx 000 0 eng d
100 _aSHARMA.B.K
245 0 _aENGINEERING CHEMISTRY
260 _bPHI NEW DELHI
_c1997
300 _a264
942 _2ddc
_cGE
999 _c486
_d486