E.L. Bargen 
Tractors and their power units 
 - New York  John Wiley and Sons Inc  1952 
 - 496p 
E.L. Bargen; W.M. Carleton; E.G. Mckibben & Roy Bainer: Tractors and their power units.  New York.  John Wiley and Sons Inc, 1952.--(631.372BAR)   
ENGLISH 
631.372  / BAR