TY  - BOOK
AU  - Dawan, Ashok
TI  - A textbook of environmental studies
SN  - 9788189005245
U1  - 333.7 
PY  - 2012///
CY  - New Delhi
PB  - Saurabh Publishing house
N1  -   Includes bibliographical references and index
UR  - http://www.loc.gov/catdir/toc/ecip0721/2007025342.html
ER  -