HALPERIN, M <br/><br/>
The use of X2 in testing effect of birth order.  [electronic resource] 

 -  Annals of eugenics  Sep 1953 
 - 99-106 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>Standard No.: </label>10.1111/j.1469-1809.1952.tb02502.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birth Order<br/>Family<br/>Humans