TY  - BOOK
AU  - Walker C.H. et.al.
TI  - Principle of Ecotoxicology
SN  - 1008493 3635X
PY  - 2006///
CY  - USA
PB  - CRS press
KW  - Pollution - Environmental aspects
KW  - Nature - Effect of human being on
KW  - Environmental toxicology
ER  -