Harper, F <br/><br/>
Principles of arable crop production 

 - London  Granada  1983 
 - 336 p. 
<br/><br/><label>ISBN: </label>0246117419 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cultvation & Harvesting
<br/><br/><label>Dewey Class. No.: </label>631.5  / HAR