Sex and age as principles of social differentiation / 
ed. by J. S. La Fontaine. 
 - London :  Academic,  1978. 
 - 188 p. :  il. 
 - Association of Social Anthropologists.  Monographs ;  17 .
<br/><br/><label>ISBN: </label>0124330509 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Problemas sociales