Bongaarts, J. <br/><br/>
The fertility impact of traditional and changing childspacing practices in tropical Africa. 

 - Washington-US :   United States Agency for International Development,   1981. 
 - página 56 :   ilustraciones blanco y negro 
 - Trimestral 
 - Vol.9, no.2 (Jul. 1981) 
 - A.I.D. research & development abstracts ;   no.2 .
 - United States Agency for International Development. .
<br/><br/> Artículo dentro de: Population-family planning.  Sumarios de investigación.