Cleveland, David A. <br/><br/>
Developmental satge age groups and african population structure :   The kusasi of the west african savanna. 

 - Washington, DC :   American Anthropological Association,   1989. 
 - p. 401-411 :   il 
 - trimestral 
 - Vol.91, no.2(Jun.1989) 
 - American Anthropologist ;   vol.91, no.2 .
 - Estados Unidos.   American Anthropological Association. .