TY  - BOOK
AU  - Sinha Shradha & Shukla Manisha
TI  - Text Book of Environmental Studies
SN  - 81-7473-302-7
U1  - CH/372.357/SIN/SHU/B06435 
PY  - 2005///
CY  - New Delhi
PB  - AITBS Publishers
ER  -