Manual of pteridology 

 - The Hague:    Martinus Nijhoff,    1938 
 - 640p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Biology 
<br/><br/><label>Universal Decimal Class. No.: </label>582.35  / G8