TY  - GEN
AU  - Asthana, D. K.
TI  - Environment: problems and solutions 
SN  - 81-219-1654-2 :
U1  - 574.5 
PY  - 2001///
CY  - New Delhi
PB  - S. Chand
KW  - ECOLOGY
N1  - Includes glossary, bibliography and index
ER  -