Jones, Fred Rufus <br/><br/>
Farm gas engines and tractors / 
Fred Rufus Jones 
 - 3rd. ed. 
 - New York :  McGraw-Hill ,  1952 
 - xii, 489p. :  ill. ;  22 cm.  
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Tractors<br/>Farm engines<br/>Mechanization
<br/><br/><label>Dewey Class. No.: </label>631.3  / JOH