TY  - GEN
AU  - Sharma, J.P.
TI  - Environmental studies: (for undergraduate classes)
SN  - 9788131806418
U1  - 363.7 SHA/Env 
PY  - 2011///
CY  - New Delhi
PB  - University Science Press
KW  - Environmental sudies
KW  - Natural resources
KW  - Ecosystem
N1  - Includes abbreviations
ER  -