Leonard, Jonathan Norton. <br/><br/>
The First Farmers / 
By J. N. Leonard ; The editors of Time-Life Books. 
 - New York :  Time-Life Books,  1973. 
 - 160 p.  ill. 
 - The Emergence of Man .
<br/><br/>Bibliogr.: p. 157 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Origin