H.J. Hopfen <br/><br/>
Farm implements for arid and tropical regions 

 - Rome  Food and Agricultural Organization of the United States  1969 
 - 159p 
<br/><br/>H.J. Hopfen: Farm implements for arid and tropical regions.  Rome.  Food and Agricultural Organization of the United States, 1969.--(631.3HOP)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.3  / FAO