TY  - BOOK
AU  - Asthana,D K
AU  - Asthana,Meera
TI  - Environment: problems and solutions
SN  - 8121916542
PY  - 2010///
CY  - New Delhi
PB  - S.chand and company
KW  - Environmental Engingineering
UR  - http://www.amazon.com/exec/obidos/ASIN/chopaconline-20
ER  -