The Soil  , how to conserve the soil 

 - Food and Agriculture Organization of the United Nations (FAO)  Rome  1994 
 - 29p.  fig. 
 - Better Farming Series  5 .
<br/><br/><label>Nat. Bib. No.: </label>4742 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.4  / SOI