Clymer, Eleanor <br/><br/>
The Second Greatest Invention: Search for the First Farmers 
By Eleanor Clymer 
 - Toronto  Holt, Rinehart and Winston, Inc.  1969 
 - 117 pages, 23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0-03-923562-9 
<br/><br/><label>Dewey Class. No.: </label>630.9 C62 1969