TY  - BOOK
AU  - Asthana, D.K..
TI  - Environment: Problems & Solutions / 
SN  - 81-219-1654-2
U1  - G:55 
PY  - 1997///
CY  - New Delhi-110055 : 
PB  - Chand & Company Ltd. , 
KW  - Life Science <Environment>
ER  -