Sakamoto, S <br/><br/>
[Medical electronics in obstetrics. 2].  [electronic resource] 

 -  Josanpu zasshi = The Japanese journal for midwife  Jul 1970 
 - 48-52 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0047-1836 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronics, Medical<br/>Fetal Heart<br/>Obstetrics<br/>Phonocardiography