P.W. Unger <br/><br/>
Predicting tillage effects on soil physical properties and processes 

 - Madison  American Society of Agronomy  1982 
 - 198p 
<br/><br/>P.W. Unger; D.M. Van Doren, Jr. & American Society of Agronomy: Predicting tillage effects on soil physical properties and processes.  Madison.  American Society of Agronomy, 1982.--(631.43UNG)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.43  / ASA