TY  - BOOK
AU  - Santra, S C
TI  - Environmental science
U1  - 363.7 S59E(3) 
PY  - 2018///
CY  - Kolkata
PB  - New Central Book Agency
N1  - 3260 28/08/2018 IBS18/102 30/08/2018 Main Budget
ER  -