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1. Indian Lands of the United States, 2006

2006. National Atlas of the United States. This polygon shapefile shows Indian lands of the United States. Only areas of 640 acres or more are included. Federally-administered lands within a... National Atlas of the United States.

2. Nonattainment Areas for Patriculate Matter Pollution: United States and Territories, 2006

2006. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the particulate... United States. Bureau of Transportation Statistics.

3. Puerto Rico Barrio Boundaries, 2003

2006. GfK MACON. This map includes the barrio boundaries of Puerto Rico created by GfK MACON company, Germany. Gfk MACON Company.

4. Puerto Rico Municipality Boundaries, 2003

2006. GfK MACON. This map includes the municipality boundaries of Puerto Rico created by GfK MACON company, Germany. Gfk MACON Company.