TY  - BOOK
AU  - ASTHANA,D.K.
AU  - Asthana, Meera
TI  - Environment: problems and solutions
SN  -  9788121916547
U1  - 333.7 
PY  - 2009///
CY  - New Delhi
PB  - S. Chand
KW  - Environment
N1  - Includes index.
ER  -