2014. United States. Bureau of Transportation Statistics. This polygon shapefile contains United States county boundaries with political limits extracted from the U.S. Census Bureau's MAF/TIGER Database (M... United States. Bureau of Transportation Statistics.
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2010. U.S. Census Bureau. Geography Division. This polygon data layer represents the 2010 TIGER/Line census county subdivisions for the United States. The TIGER/Line Files are shapefiles and re...
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing data quality features throughout DCW (Digital Chart of the World) geographic coverage as of 1992... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polygon coverage representing data quality features throughout DCW (Digital Chart of the World) geographic coverage as of 1992.... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyfon coverage representing political and ocean feature areas found throughout DCW (Digital Chart of the World) geographic co... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing political boundaries and ocean feature lines found throughout DCW (Digital Chart of the World) g... National Imagery and Mapping Agency.
2013. United States. Department of State. Office of the Geographer. This polygon shapefile contains the boundaries of countries in Asia (including Russia). This layer, created by the Office of the Geographer, combin... United States. Department of State. Office of the Geographer. Humanitarian Information Unit.
2013. United States. Department of State. Office of the Geographer. This polygon shapefile contains the boundaries of countries in North America. This layer, created by the Office of the Geographer, combines two dat... United States. Department of State. Office of the Geographer. Humanitarian Information Unit.
2021. Dorin, Rowan, Romani, Clara, and Womack, Claire. Polygons of the boundaries of ca. 750 dioceses across Latin Christendom as they appeared between 1200-1500. Rather than corresponding to any partic... Stanford Digital Repository.
2021. Dorin, Rowan, Romani, Clara, and Womack, Claire. Polygons of the boundaries of ca. 750 dioceses across Latin Christendom as they appeared during the thirteenth century. The map excludes dioceses i... Stanford Digital Repository.