New Approaches to Monitoring Aquatic Ecosystems 

 - Philadelphia,  ASTM Special Technical Publication,  1985, 
 - ix,199p.  21cm. 
<br/><br/><label>ISBN: </label>0-8031-0939-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic Ecosystems<br/>New Approaches to Monitoring<br/>Ecosystems
<br/><br/><label>Dewey Class. No.: </label>574.5  / NEW