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1. California Block Groups 2002

2002. Geographic Data Technology, Inc. (GDT). California Block Groups represents the U.S. Census block groups of California. Environmental Systems Research Institute, Inc. (ESRI).

2. California Tracts 2002

2002. Geographic Data Technology, Inc. (GDT). California Tracts represents the U.S. Census tracts and block numbering areas (BNA) of California. Environmental Systems Research Institute, Inc. (ESRI).