TY  - BOOK
AU  - Joseph, Benny14786
TI  - Environmental studies / 2nd ed. 
SN  - 9780070648135
U1  - 628:504 
PY  - 2012///
CY  - New Delhi
PB  - Tata McGraw Hill 
KW  - Natural resources14787
KW  - Ecology 14788
ER  -