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CensusCD neighborhood change database (NCDB) [electronic resource] : 1970-2000 tract data : selected variables for US Census tracts for 1970, 1980, 1990, 2000 and mapping too / Geolytics.
tagged
census
data
historic
ncdb
tract
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cmontagn
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and 3 other people
...on 25-JUL-06
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CensusCD neighborhood change database (NCDB) [electronic resource] : 1970-2000 tract data : selected variables for US Census tracts for 1970, 1980, 1990, 2000 and mapping too / Geolytics.
tagged
census
data
historic
ncdb
tract
by
laallen
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and 3 other people
...on 17-OCT-05
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