000 00333nam a2200133Ia 4500
008 241225s9999 xx 000 0 und d
020 _a0
082 _a660
_bGUP
100 _aGupta, Omprakash.
245 0 _aChemical engineering
260 _aDelhi :
_bKhanna Publication,
_c1997.
365 _a65.00
650 _aChemical Sciences
999 _c7939
_d7939