TY  - BOOK
AU  - Singh,J S.
AU  - Singh,S P  .
AU  - Gupta,S R  .
TI  - Ecology environment and resource conservation / 
SN  - 9788188342556
U1  - 577.27 
PY  - 2008///
CY  - New Delhi : 
PB  - Anamaya publishers , 
KW  - ENVIRONMENT SCIENCE
N1  - Includes references and index
ER  -