Work, trade & farming through the ages / 
Series editor, Dr. John Haywood. 
 - New York :  Lorenz Books,  2001. 
 - 64 p. 
<br/><br/><label>ISBN: </label>0-7548-0817-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History--Ancient<br/>Ancient civilizations<br/>Agriculture--History