TY  - BOOK
AU  - Singh, H. R.
AU  - Neeraj Kumar
TI  - Ecology and environmental science
SN  - 8188646148
U1  - RL 574.5 S617E,6 
PY  - 2006///
CY  - Jalandhar
PB  - Vishal
KW  - Ecology
ER  -