Gill, William R  <br/><br/>
Soil dynamics in tillage and traction  

 - Washington:   Agricultural Research Service 
 - viii, 511p.  
 - Agriculture Handbook   316 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Soil dynamics  
<br/><br/><label>Universal Decimal Class. No.: </label>624.131  / K7