Tractors and their power units / 
E.L. Barger, ... [et al.] 
 - 2nd ed. 
 - New York :  Wiley,  c1963 
 - xvii, 524 p. :  ill. 
<br/><br/><label>LCCN: </label>93044178     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tractors--Motors.