Shackley, Steven M. <br/><br/>
Sources of archaeological obsidian in the greater American southwest :   an update and quantitative analysis. 

 - Washington-US :   Society for American Archaeology,   1995. 
 - p. 531-551 :   il. 
 - Trimestral 
 - Vol. 60, no, 3 (Jul 1995) 
 - American Antiquity ;   vol. 60 no. 3 .
 - Washington.   Society for American Archaeology. .
<br/><br/><br/>Inglés.