TY  - BOOK
AU  - Saxena,H M.
TI  - Environmental Studies / 
SN  - 8170339936
U1  - 363.7 
PY  - 2006///
CY  - New Delhi : 
PB  - Rawat Publications , 
KW  - ENVIRONMENTAL SCIENCE
N1  - includes bibliogrphy,gloswsary,index
ER  -