2000. Geological Survey (U.S.). This polygon shapefile portrays the 2000 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).
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2000. U.S. Census Bureau. Geography Division. This polygon shapefile represents the unified school district boundaries in Kentucky. School districts are geographic entities within which state, ... U.S. Census Bureau. Geography Division.
2000. National Atlas of the United States. This data set portrays labor statistics annual averages for the years 2000 and 2001, shown by county, for the United States and Puerto Rico. The d... National Atlas of the United States.