Hartley, P.V <br/><br/>
Tractor design and operation for research stations 

 - Ibadan  IITA  1990 
 - 20p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural implements:--Tractor<br/>Farm machinery 
<br/><br/><label>LC Class. No.: </label>S675. H3 1990