Lal, Rattan, <br/><br/>
Sustainable management of soil resources in the humid tropics 
by Rattan Lal. 
 - Tokyo  United Nations University Press  1995. 
 - xviii, 146 pages :    illustration, ;    21 cm. 
<br/><br/> 'UNUP-876'--T.p. verso. 
<br/><br/>p. 138-146. 
<br/><br/><label>ISBN: </label>9280808761  RM53.21 
<br/><br/><label>Subjects--Topical Terms: </label><br/>0Sustainable agriculture--Tropics<br/>Soil conservation--Tropics<br/>Soil erosion--Tropics<br/>Sustainable forestry--Tropics<br/>Deforestation--Tropics