Farm implements for arid and tropical regions /    
by H.J. Hopfen, F arm Implement Specialist. 
 - Rome :   Food and Agriculture Organization of the United Nations,   1960. 
 - vii, 157 p. :    ill. ;    23 cm. 
 - FAO agricultural development paper ;   no. 67 .
<br/><br/>Includes bibliographical references (p. 145-148). 
<br/><br/><label>LCCN: </label>62-001100 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural implements.--------