TY  - BOOK
AU  - Walker,C.H.
TI  - Principles of ecotoxicology
SN  - 0748409394
AV  - QH545 .AI P745 2001
U1  - 577.27  22nd ed.
PY  - 2001///
CY  - London
PB  - Taylor & Francis
KW  - Pollution
KW  - Environmental aspects
N1  - Includes bibliographical references
ER  -