LEWIS, B E <br/><br/>
Some economic implications of an ageing population.  [electronic resource] 

 -  Advancement of science  Apr 1949 
 - 21 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0001-866X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aged<br/>Aged, 80 and over<br/>Aging<br/>Humans