Directory of wheel and crawler tractors:  
Produced throughout the world  
 - Rome:   Food and Agriculture Organization of the United Nations,   1962 
 - 159p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Subjects--Index Terms: </label>Agriculture 
<br/><br/><label>Universal Decimal Class. No.: </label>R 631.372(058.7)