TY  - BOOK
AU  - Thakur,Vidya
TI  - A text book of environmental science
SN  - 9788172337568
U1  - 372.357 23
PY  - 2012///
CY  - New Delhi
PB  - A.P.H. Publishing corporation
KW  - Environmental ecology
N1  - Includes bibilography
ER  -