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2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shape file depicts internal, first-order administrative boundaries for states and provinces of Australia, Brazil, Canada and the Unite... North American Cartographic Information Society.
2012. Department of Conservation & Development, Contra Costa County. This dataset represents the Supervisor Disricts within Contra Costa, California. Latest data revision occurred in November 2012; Data was mapped an...
2012. Amador County (Calif.). Amador County Supervisorial District Boundaries based on the 2010 Census.
2012. Napa County Geographic Information Systems . This layer is compoised of polygons depicting the Supervisorial Disricts a provided by the Napa County elections department .
2012. Department of Elections, Francisco County, California. . Supervisorial Districts, developed by Redistricting Task Force, submitted on 18 April 2012. Note: for mapping and analysis purposes, the non-land a...
2010, 2011, 2012, and 2013. U.S. Census Bureau. Geography Division and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 2010 Census urban areas in the United States. An urban area comprises a densely settled core of census tracts... Environmental Systems Research Institute (Redlands, Calif.).
2012. Geographic Information Systems, Sonoma County (Calif.)., California . The urban service area (USA) dataset represents the designated limit to the urban development of unincorporated communities per Sonoma County's Gen...
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts 394 authorized Park Service units in the United States only that are over 100,000 acres. The data does not include a... North American Cartographic Information Society.
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polygon shapefile depicts 394 authorized Park Service units in the United States only with scale rankings that are over 100,000 acres. Scale r... North American Cartographic Information Society.
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts 394 authorized Park Service units in the United States only that are over 100,000 acres. The data does not include ... North American Cartographic Information Society.