Constance, Lincoln. <br/><br/>
The systematics of the Angiosperms 

<br/><br/> Sobretiro de: A Century of progress in the natural sciences 1853-1953. San Francisco, California Academy of Sciences, 1955. pp.405-483 
<br/><br/><label>LCCN: </label>28381 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angiospermas.