TY  - BOOK
AU  - PURAKYASTHA, B. D.
AU  - PURAKYASTHA, B. D.,
AU  - CHAKRABOTY, B. B.
TI  - COLLEGE CHEMISTRY
U1  - 546 PUR 
PY  - 1994///
CY  - NEW DELHI
PB  - KALYANI PUBLISHERS
ER  -