Sopher, Charles, D. <br/><br/>
Soils and soil management 
/by Charles D.Sopher, Jack V.Baird 
 - Virginia  Reston pub.  1978 
<br/><br/> Include index 
<br/><br/><label>ISBN: </label>879098015 
<br/><br/><label>Dewey Class. No.: </label>631.4  / SOP