TAKAHASHI, E <br/><br/>
The effects of the age of the mother on the sex ration at birth in Japan.  [electronic resource] 

 -  Annals of the New York Academy of Sciences  Jan 1954 
 - 531-50 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0077-8923 
<br/><br/><label>Standard No.: </label>10.1111/j.1749-6632.1954.tb36429.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans<br/>Japan<br/>Mothers<br/>Sex Characteristics