Resch, B A <br/><br/>
On the fetal heart rate in early pregnancy.  [electronic resource] 

 -  American journal of obstetrics and gynecology  May 1973 
 - 293-4 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Standard No.: </label>10.1016/0002-9378(73)91071-5  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Female<br/>Fetal Heart<br/>Gestational Age<br/>Heart Rate<br/>Humans<br/>Pregnancy