Symposium on unique process in tropical plants and soils (1969: Florida) unique processes in tropical plants and soils / 
H. L. Popenoe, moderator. 
 - Gainesville, Fla :  Center for Tropical Agriculture, Institute of Food & Agricultural Sciences, University of Florida,  c1969. 
 - 50 pages ;  23 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant-soil relationships -- Congresses.<br/>Tropical plants -- Congresses.