TY  - BOOK
AU  - Varshney,C.K..
AU  - Sardesai,D.R..
TI  - Environmental challenges / 
SN  - 8122405258
U1  - 333.715 
PY  - 1993///
CY  - New Delhi : 
PB  - Wiley Eastern , 
KW  - ENVIRONMENTAL MANAGEMENT
N1  - NULL
ER  -