Knebel, Curt,  1871- <br/><br/>
Phyllocactus. 
Compiled by Werner Engelhardt, edited by Gertrude W. Beahm. 
 - Pasadena, Calif.,  Abbey Garden Press,  c1949. 
 - 63 p.  illus.  21 cm. 
<br/><br/><label>LCCN: </label>agr50000029  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epiphyllum.
<br/><br/><label>LC Class. No.: </label>SB413.C12  / K5 
<br/><br/><label>Dewey Class. No.: </label>635.933471