000 00272nam a2200121Ia 4500
041 _aEN
082 _a540
_bGUP
100 _aGupta, R.K .
245 0 _aEncyclopedia of Chemistry.Vol.I /R.K.Gupta.
260 _bNew Delhi : Cyber ,
_c2003
300 _a417
942 _cBK
999 _c27203
_d27203