TY  - BOOK
AU  - Shradha Sinha
AU  - Manisha Shukla
TI  - A text book of environmental studies
SN  - 9788174733023
U1  - 574.5 SHR 
PY  - 2011///
CY  - New Delhi
PB  - AITBS Publishers
KW  - Environment
ER  -