Abell, Robin A. <br/><br/>
Freshwater ecoregions of North America  a conservation assessment  

 - Washington  Island Press  2000 
 - xv,319p.  28cm 
<br/><br/><label>ISBN: </label>155963734X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freashwater ecology-North America<br/>Biological diversity conservation-North America<br/>Biotic communities-North America
<br/><br/><label>Dewey Class. No.: </label>577.6  / FRE