000 00299nam a2200145Ia 4500
100 _aRao, C N R
080 _a540/Rao 
526 _dNTB
526 _aUG
942 _cBK
245 _aUnderstanding chemistry
260 _aUniversity press
_bHyderabad
_c1999
300 _avii,298
546 _aE
999 _c72931
_d72931