U. M Cowgill <br/><br/>
Aquatic toxicology and hozard assessmen 

 - Philadelphia;  ASTM,  1989. 
 - 437p.  ; ill.  : 24cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic animals<br/>Aquatic plants,<br/> Water pollution - toxicology