Freshwater algae of North America :  ecology and classification / 
edited by John D. Wehr and Robert G. Sheath 
 - San Diego, California :  Academic,  c2003 
 - xvi, 918 p. :  ill. ;  29 cm. 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>ISBN: </label>0127415505 (alk. paper)  RM522.40 
<br/><br/><label>LCCN: </label>2002-107708 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater algae--Ecology--North America<br/>Freshwater algae--Classification--North America