Rittershausen, P. R. C. <br/><br/>
Successful orchid culture / 
P. R. C. Rittershausen 
 - London :  W. H. and L. Collingridge ;  1953 [Impression 1954] 
 - 136 p. :  illus. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orchid culture.<br/>Orchid
<br/><br/><label>Dewey Class. No.: </label>584.4  / RIS 1954