PATTEN, B M <br/><br/>
The first heart beats and the beginning of the embryonic circulation.  [electronic resource] 

 -  American scientist  Apr 1951 
 - 225-43 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0003-0996 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embryo, Mammalian<br/>Embryo, Nonmammalian<br/>Heart Rate<br/>Myocardial Contraction