Fairservis, Walter <br/><br/>
The threshold of civilization :  an experiment in prehistory 

 - New York :  Ch. Scribner's sons,  1975 
 - 256 p: :  ill., cartes, tab., index 
<br/><br/> <Donation Engel> 
<br/><br/>bibliogr. p. 241-247 
<br/><br/><label>ISBN: </label>0684140454