Conference proceedings 

 - St. Joseph, Mich. :  American society of Agricultural Emgineers,  (1968?) 
 - 42 p.  : ilus. ; gráfs. 
<br/><br/> ASAE publication proc; 467 
<br/><br/><label>LCCN: </label>52722 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tractores.