Thorp and Covich's Freshwater invertebrates / 
 Freshwater invertebrates. 
edited by James H. Thorp, D. Christopher Rogers. 
 - Fourth edition. 
 - volumes <1> :  illustrations (some color) ;  29 cm. 
<br/><br/> Revised edition of: Ecology and classification of North American freshwater invertebrates / edited by James H. Thorp and Alan P. Covich. Third edition. 2010. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Volume 1.  Ecology and general biology. 
<br/><br/><label>ISBN: </label>9780123850263  RN669.24 0123850266 (v. 1) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater invertebrates--North America.