OBERMAN, J L <br/><br/>
The cardiac in New York City's transit system.  [electronic resource] 

 -  Industrial medicine & surgery  Nov 1957 
 - 499-505 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0019-8536 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Heart<br/>Heart Diseases--epidemiology<br/>Humans<br/>New York City<br/>Occupational Health