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Start Over Place Puerto Rico Subject Environment Bounding Box -86.51116 39.149274 -86.508949 39.150938

2. Bailey's Ecoregions and Subregions of the United States, 2004

Stanford University Public content
2004. United States. Forest Service. This polygon shapefile is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.... National Atlas of the United States.

3. Classification of Forest Fragmentation in North America, 1992

Stanford University Public content
2002. Ritters, Kurt. This raster layer is a grid map of North America including the Caribbean and most of Mexico in GeoTIFF format. The map layer is an excerpt from a g... National Atlas of the United States.

4. Hazardous Waste, Generated, Shipped, Received 2001-2007

Stanford University Public content
2011. National Atlas of the United States. This polygon shapefile portrays the hazardous waste generated, shipped, and received by state and other areas within the United States, Puerto Rico... National Atlas of the United States.

5. National Wilderness Preservation System of the United States, 2006

Stanford University Public content
2006. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.

8. Nonattainment Areas for Lead Pollution: United States and Territories, 1978

Stanford University Public content
1978. Stackhouse, Cecil and United States. Bureau of Transportation Statistics. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.

9. Nonattainment Areas for Lead Pollution: United States and Territories, 2008

Stanford University Public content
2008. Stackhouse, Cecil and United States. Bureau of Transportation Statistics. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.

10. Nonattainment Areas for Ozone Pollution: United States and Territories, 1979

Stanford University Public content
1979. Stackhouse, Cecil and United States. Bureau of Transportation Statistics. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.