Willkie, Herman Frederick  1890- <br/><br/>
Carburante agrícola  (Food for thought) /  
Herman Frederick Willkie, Paul John Kolachov. 
 - Indianapolis :   Indiana farm bureau, inc.  [c1943] 
 - 276 p., 2 l.  incl. illus., tables, diagrs.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COMBUSTIBLE<br/>MAQUINARIA AGRICOLA
<br/><br/><label>Universal Decimal Class. No.: </label>631.3