TY  - BOOK
AU  - Walker, C.H...[et al.]
TI  - Principles of ecotoxicology: _
SN  - 9781439862667
U1  - 577.27 
PY  - 2012///
CY  - New York
PB  - CRC Press
KW  - 
N1  - includes bibliographical references and index
ER  -