Principles of Ecotoxicology 
/ by C.H. Walker ... [ et.al ] 
 - 3rd ed. 
 - Boca Raton;  CRC Press, Taylor & Francis Group :  2006. 
 - xxiii, 315p. 
<br/><br/><label>ISBN: </label>084933635X 
<br/><br/><label>Dewey Class. No.: </label>577.27  / WAL/P