Soil conservation  problems and prospects  

 - John Wiley & Sons  N.Y.  1981 
 - 575p.  fig., table, chart, ill. 
<br/><br/><label>Nat. Bib. No.: </label>5297 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Universal Decimal Class. No.: </label>631.45  / MOR