Copeland, Edwin Bingham. <br/><br/>
Genera filicum  : the genera of ferns 

 - New York :  Ronald,  1947 
 - 247 p.  : ilus. 
<br/><br/><label>LCCN: </label>30223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helechos.
<br/><br/><label>Dewey Class. No.: </label>587.31  / C66