Barger, E. L. (Edgar Lee) <br/><br/>
Tractors and their power units / 
[by] E.L. Barger [and others]. 
 - 2nd ed. 
 - New York :  Wiley,  [1967, c1963] 
 - Ferguson Foundation agricultural engineering series .
<br/><br/> First published in this edition in 1963. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>63021357 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tractors.