TY  - BOOK
AU  - Stnha,Shradha, Shukla, Manisha
AU  - x
TI  - A text book of environmental studies: x
SN  - 8174733027
U1  - 304.2/S615t 
PY  - 2005///
CY  - Delhi
PB  - AITBS Pub.
KW  - Environment
N1  - Includes
ER  -