Read 1980 Census of Population and Housing: Census Tracts; Philadelphia, Pa.-N. J., Standard Metropolitan Statistical Area (Classic Reprint) Online
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D.O.W.N.L.O.A.D [P.D.F] 1980 Census of Population and Housing: Census Tracts; Philadelphia, Pa.-N. J., Standard Metropolitan Statistical Area (Classic Reprint) by United States Bureau of the Census