Seeman, Mark F. <br/><br/>
Ohio hopewell trophy skull artifacts as evidence for competition in middle woodland societies Circa 50 B.C.- A.D. 350. 

 - Washington-US :   Society for American Archaeology,   1988. 
 - p. 565-577 :   il. 
 - Trimestral 
 - Vol. 53, no, 3 (Jul 1988) 
 - American Antiquity ;   vol. 53 no. 3 .
 - Washington.   Society for American Archaeology. .
<br/><br/><br/>Inglés.