Lal R Ed. <br/><br/>
Soil physical properties and crop production in th 
Lal R Ed.; Greenland D J Ed. 
 - New York  John Wiley U. S. A.       1979 
 - 551p.  cm. 
<br/><br/> Bibliography p.533-36 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:1:7.192.N7, L9