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1. 1:1,000,000-Scale County Boundary Lines of the United States, 2014

2014. Geological Survey (U.S.). This polygon shapefile contains the county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. This layer was derived from t... Geological Survey (U.S.).

2. Global Map: 1:1,000,000-Scale Political Boundary Lines of the United States, 2014

2014. National Atlas of the United States. This line shapefile includes Global Map data showing the counties and equivalent entities of the United States, Puerto Rico, and the U.S. Virgin Is... National Atlas of the United States.

3. World Boundaries of Disputed Areas, 1:10 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile depicts the boundaries of disputed areas and breakaway regions ranging from Kashmir to the Elemi Triangle and Northern Cyprus t... North American Cartographic Information Society.

4. World Boundaries of Disputed Areas, 1:50 million (2012)

2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This line shapefile depicts the boundaries of disputed areas and breakaway regions ranging from Kashmir to the Elemi Triangle and Northern Cyprus t... North American Cartographic Information Society.