000 00241nam a2200109Ia 4500
999 _c6049
_d6049
082 _a540 CHA
100 _aChawla, Shashi
245 0 _aEngineering Chemistry
250 _a9th
260 _bDhanpat Rai & CO. (P) LTD.ND
942 _2ddc
_cREF
_0149