L., R. <br/><br/>
If Fossils Could Talk... :   The Great Debate over the Origin of Language. 

 - Oregon-XXU :   The Leach Publishing Group,   1999. 
 - p. 74-75:   il. 
 - Bimestral 
 - Vol. I, no. 3, (May./Jun. 1999) 
 - Discovering Archaeology ;   no. 3 .
 - Estados Unidos.   The Leach Publishing Group. .
<br/><br/> Special Report : A Dark New View of the American Soithwest. 
<br/><br/><br/>Art¡culo en inglés.