Abbas, Ibrahim Kalule.abiti, I <br/><br/>
Proximate determinants of fertility in North Sudan 

 - London  World Fertility Survey  1985 
 - 35 
 - World Fertility Survey Scientific Reports 73 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Age<br/>Lowlands<br/>ofothills<br/>River valley<br/>Sex<br/>WFS