TY  - BOOK
AU  - Asthana, D. K. .
AU  - Asthana, Meera .
TI  - Environment: Problems and Solutions
U1  - 574.52 
PY  - 2001///
CY  - New Delhi
PB  - S Chand & Co Ltd
KW  - Biology
KW  - G-Biology
ER  -