Intelligence and fertility.  [electronic resource] 

 -  British medical journal  Apr 1972 
 - 125-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1447 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Family Characteristics<br/>Family Planning Services<br/>Fertility<br/>Humans<br/>Intelligence