Pimentel David Ed. <br/><br/>
World soil erosion and conservation 

 - New York  Cambridge University Press U S A      1993 
 - xii,349p.  cm. 
 - Cambridge studies in applied ecology and resource management .
<br/><br/> Bib p. 311-44 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural Geography
<br/><br/><label>Dewey Class. No.: </label>U672(J:1:4).1.N9, N3