Clark, Grahame,  1907-, <br/><br/>
Prehistoric societies / 
By Grahame Clark and Stuart Piggott. 
 - 1st American ed. 
 - Harmondsworth :  Penguin,  1970. 
 - 352 pages :  illustrations, maps. ;  18 cm. 
<br/><br/>Bibliography: page 333-340. 
<br/><br/><label>ISBN: </label>0140211497 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Man, Prehistoric.<br/>Society, Primitive.