Alcock, Ralph <br/><br/>
Tractor-implemented systems / 
Ralph Alcock. 
 - Westport, CT :  AVI Pub,  c1986. 
 - xi, 161 pages. : illustrations. 
<br/><br/> Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Farm tractors<br/>Agricultural implements