Hughes, Harold A.,  <br/><br/>
Conservation farming / 
Harold A. Hughes 
 - Illinois :  John Deere Technical Services 
 - vi, 150 pages :  colour illustrations ;  28 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural systems<br/>Farm management
<br/><br/><label>LC Class. No.: </label>S604.64 C66