000 00293nam a2200121Ia 4500
008 230303s9999 xx 000 0 und d
041 _aeng
082 _a540 RAT
100 _aRattan ( Sunita )
245 _aEngineering Chemistry
260 _aNEW DELHI
_bS.K.KATARIA & SONS F
365 _cRS
999 _c215212
_d215212