Berfer, Robertn A.,  <br/><br/>
The preceramic period site of paloma, Peru :   Bioindications of improving adaptation to sedentism. 

 - Washington, DC-US :   Society for American Archaeology,   1990. 
 - p. 284-318 :   il 
 - trimestral 
 - Vol.1, no.4(Dec.1990) 
 - Latin American Antiquity ;   vol.1,no.4 .
 - Estados Unidos.   Society for American Archaeology. .