Selected indicator # 9, aging persons 65 and over per 100 adults 18 to 64 for 2206 enumeration districts : [Washington D.C. metropolitan area]
Library of Congress — Maps

Selected indicator # 9, aging persons 65 and over per 100 adults 18 to 64 for 2206 enumeration districts : [Washington D.C. metropolitan area]

national capital regional planning council · 1960

Map
CC0 — Public Domain
Library of Congress — Maps
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