Hopfen, H. J.,  <br/><br/>
Farm implements for arid and tropical regions / 
prepared by H. J. Hopfen 
 - Rome :  Food and Agriculture Organization of the United Nations,  1960 
 - vii, 157 pages :  illustrations ;  23 cm 
<br/><br/> Includes table 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural implements
<br/><br/><label>LC Class. No.: </label>HD96846 H67