Khalifa, M A <br/><br/>
Determinants of natural fertility in Sudan.  [electronic resource] 

 -  Journal of biosocial science  Jul 1986 
 - 325-36 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0021-9320 
<br/><br/><label>Standard No.: </label>10.1017/s0021932000016291  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Amenorrhea--etiology<br/>Birth Intervals<br/>Breast Feeding<br/>Contraception Behavior<br/>Female<br/>Fertility<br/>Humans<br/>Marriage<br/>Middle Aged<br/>Postpartum Period<br/>Pregnancy<br/>Sudan<br/>Time Factors