000 00269nam a2200121Ia 4500
008 221221s9999 xx 000 0 und d
082 _a540.621
_bCHA/E
100 _aChauhan, B S
245 0 _aEngineering Chemistry
250 _a3
650 _aChemistry
942 _cBK
999 _c11199
_d11199