Common weeds of the United States 

 - New York :  Dover,  1971 
 - 463 p.  : ilus. 
<br/><br/><label>LCCN: </label>39506 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Malas hierbas--E.U.A.
<br/><br/><label>Dewey Class. No.: </label>632.58  / E83