TY  - BOOK
AU  - Mukhopadhyay, Asish
TI  - Model question & answers on environmental studies
U1  - 375.083 
PY  - 2008///
CY  - Kolkata
PB  - Book India
KW  - Environmental Studies
KW  - Environmental science
KW  - Environment
KW  - Ecology
ER  -