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Boundaries
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Society
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District of Columbia
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2002
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1. District of Columbia Block Groups 2002
2002. Geographic Data Technology, Inc. (GDT). District of Columbia Block Groups represents the U.S. Census block groups of District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).
2. District of Columbia Tracts 2002
2002. Geographic Data Technology, Inc. (GDT). District of Columbia Tracts represents the U.S. Census tracts and block numbering areas (BNA) of District of Columbia. Environmental Systems Research Institute, Inc. (ESRI).