Evaluation of the impact of family planning programmes on fertility   : sources of variance 
/ Nations Unies 
. - New York  : United Nations, 1982
. - 290 p.  ; 28 cm. 
 - Population studies  76 .
<br/><br/><label>Source: </label> Dons divers 
<br/><br/><label>Universal Decimal Class. No.: </label>312.12