Kirkbride, Joseph H. <br/><br/>
Revision of the genus Psyllocarpus (Rubiaceae) 

 - Washington :  Smithsonian Institution,  1979 
 - 32 p.  : ilus. mapas 
 - Smthsonian contributions to botany  ; 41 .
 - Smthsonian contributions to botany  ; 41 .
<br/><br/><label>LCCN: </label>27871 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psyllocarpus.<br/>Rubiáceas.