TY  - BOOK
AU  - Joseph Benny
AU  - Joseph Benny
TI  - Environmental studies
SN  - 97800706438135 (pbk)
U1  - G:55, P9;4 
PY  - 2009///
CY  - New Delhi
PB  - Tata McGraw-Hill     
N1  - Appendix 314-338p.; Index 339-347p
ER  -