Hall, Clarence. <br/><br/>
More about Riegers 

<br/><br/> 26-246  Sobretiro de: The Begonian. 140: 197-198, 1973 
<br/><br/><label>LCCN: </label>68114 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Begonias.