Anderson, Wood Powell. <br/><br/>
Perennial weeds :  characteristics and identification of selected herbaceous species 
/by Wood Powell Anderson 
 - Iowa, U.S. :  Iowa State University Press,  1999. 
 - 228 p. :  ilus. ; mapas 
<br/><br/><label>ISBN: </label>0813825202 
<br/><br/><label>LCCN: </label>82995 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fitogeografía.<br/>Malas hierbas--E.U.A.<br/>Malas hierbas--Ecología.<br/>Malas hierbas--Identificación.
<br/><br/><label>Dewey Class. No.: </label>632.5  / A52