TY  - BOOK
AU  - Garg, Santosh Kumar., Garg, Rajeshwari. and Garg, Ranjni.
TI  - Ecological and environmental studies
SN  - 3174092188
AV  - D3848 
U1  - 363.7 22
PY  - 2006///
CY  - New Delhi
PB  - Khanna Publishers
N1  - Includes bibliography and index
ER  -