000 00319nam a2200133Ia 4500
008 220919s9999 xx 000 0 und d
082 _bJAI
100 _aJAIN, PREETI
245 0 _aENGINEERING CHEMISTRY
260 _bVARIETY BOOK PUBLISHERS, NEW DELHI
_c2011
300 _a142
650 _aChemistry
942 _cBK
999 _c147249
_d147249