Maxon, William Ralph, 1877-1948 <br/><br/>
Report upon a collection of ferns from Western South America 

 - Washington  [s. n.]  1915 
 - 12 p. 
 - Smithsonian miscellaneous collections .
<br/><br/><label>Subjects--Topical Terms: </label><br/>HELECHOS<br/>AMERICA DEL SUR