ROTH, D B <br/><br/>
Ectopic pregnancy; is it increasing.  [electronic resource] 

 -  Obstetrics and gynecology  May 1959 
 - 544-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0029-7844 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Female<br/>Humans<br/>Pregnancy<br/>Pregnancy, Ectopic--statistics & numerical data