Little, Elbert L., Jr. <br/><br/>
Forest trees of the United States and Canada  : and how to identify them 

 - New York :  Dover,  1979 
 - 70 p.  : ilus. ; mapas 
<br/><br/><label>LCCN: </label>30980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Árboles--Canada.<br/>Árboles--E.U.A.<br/>Árboles--Identificación.