Irwin, D E <br/><br/>
Ring species as bridges between microevolution and speciation.  [electronic resource] 

 -  Genetica  2001 
 - 223-43 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review 
<br/><br/><label>ISSN: </label>0016-6707 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Biological Evolution<br/>Models, Biological<br/>Phylogeny