Hawkes, K. <br/><br/>
Hadza Women's Time Allocation, Offspring Provisioning, and the evolution of Long Postmenopausal Life Spans. 

 - Chicago-US :   Department of Human Sciences,   1997. 
 - p. 551-577 
 - Trimestral 
 - Vol.38, no.4 (Aug-Oct. 1997) 
 - Current Anthropolgy ;   vol. 38 no. 4 .
 - Estados Unidos.   The University of Chicago Press. .
<br/><br/><br/>Inglés.