TY  - BOOK
AU  - Gupta, R.K.  .
TI  - Encyclopaedia of chemistry / 
SN  - 81-7884-085-5(set)
U1  - Ek 
PY  - 2003///
CY  - New Delhi : 
PB  - Cyber Tech Publications , 
KW  - Chemistry- Encyclopaedia
ER  -