Csorba, Julius J.  1924- <br/><br/>
Farm tractors :  trends in type, size, age and use / 
[by Julius J. Csorba]. 
 - Washington, D.C. :  Agricultural Research Service, U.S. Dept. of Agriculture,  1960. 
 - 16 p. ;  26 cm. 
 - Agriculture information bulletin ;  no. 231 .
<br/><br/> Cover title. 
<br/><br/>Bibliography: p. 16. 
<br/><br/><label>LCCN: </label>agr60000382  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Farm tractors.
<br/><br/><label>LC Class. No.: </label>S21  / .A74 no. 231 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84Ab no.231