The social and biological challenge of our aging population :    Eas tern States Health Education Conference proceedings, March 31 - April 1 , 1949, New York. 

 - New York :    Eastern States Health Education Committee,    1950. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Aging population.<br/> Social challenges.
<br/><br/><label>Dewey Class. No.: </label>301.46