Developments in fertility control : report of a WHO Scientific Group [meeting held in Geneva from 11 to 15 November 1968]. 

 - 36p. 
 - (WHO technical report series ; 424) .
<br/><br/><label>ISBN: </label>92-4-120424-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Contraceptive agents