Usborne big machines : tractors 

 - London  Usborne Publishing Ltd.  1992 
<br/><br/> Very young children will enjoy learning about tractors and farm machinery in this bright and lively board book. Realistic illustrations and very simple text encourage looking, pointing and talking.  
<br/><br/><label>ISBN: </label>0746010974 
<br/><br/><label>Subjects--Index Terms: </label>Tractors  Juvenile literature