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11. United States States (Generalized)

2010. Economic and Social Research Institute (Reston, Va.). United States States (Generalized) is a polygon theme representing the 50 states and the District of Columbia of the United States. Attribute infor... ESRI.

12. United States Telephone Area Code Boundaries, 2010

2010. Tele Atlas North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). United States Telephone Area Code Boundaries is a polygon theme representing the telephone area codes for the United States. They are also known as... ESRI.

13. World Urban Areas, 2010

2010. DeLorme Publishing Company, Inc. and Economic and Social Research Institute (Reston, Va.). World Urban Areas is a polygon theme representing the major urban areas of the world. ESRI.