Healy, Paul F. <br/><br/>
Ancient and modern maya exploitation of the jute snail (pachychilus).   

 - Washington, DC-US :   Society for American Archaeology,   1990. 
 - p. 170-183 :   il 
 - trimestral 
 - Vol.1, no.2(Jun.1990) 
 - Latin American Antiquity ;   vol.1,no.2 .
 - Estados Unidos.   Society for American Archaeology. .