Gupta, R.K. .
Encyclopaedia of chemistry / by R.K. Gupta. - New Delhi : Cyber Tech Publications , 2003 - 3 vols ;
81-7884-085-5(set)
Chemistry- Encyclopaedia
Ek / P3.3
Encyclopaedia of chemistry / by R.K. Gupta. - New Delhi : Cyber Tech Publications , 2003 - 3 vols ;
81-7884-085-5(set)
Chemistry- Encyclopaedia
Ek / P3.3