TY  - BOOK
AU  - Singh, J. S. / Singh, S. P. / Gupta, S. R.
TI  - Ecology Environment And Resource Conservation
SN  - 81-88342-55-6
U1  - 574.5 
CY  - N. Delhi
PB  - Anamaya Publishers
KW  - Ecology
N1  - 117
ER  -