2002. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2002 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
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2007. National Atlas of the United States. This polygon shapefile portrays a selected set of information that was collected for the 2007 Census of Agriculture by the National Agricultural St... National Atlas of the United States.
2011. United States. Bureau of Transportation Statistics and United States. Federal Aviation Administration. The Airport Runways database is a geographic dataset of runways in the United States and its Territories containing information on the physical cha... United States. Bureau of Transportation Statistics.
2012. Geological Survey (U.S.). This point shapefile includes airports in the United States, Puerto Rico and the U.S. Virgin Islands. The data were derived from an extract of the ... Geological Survey (U.S.).
2011. United States. Bureau of Transportation Statistics and United States. Federal Aviation Administration. This point shapefile depicts aircraft landing facilities in the United States and United States Territories. Attribute data is provided on the phys... United States. Bureau of Transportation Statistics.
2013. Hudgins, Andrew and United States. Bureau of Transportation Statistics. This point shapefile depicts fueling facilities that offer fuels other than gasoline in the United States. Through a nationwide network of local co... United States. Bureau of Transportation Statistics.
2010. Hunt, Raquel and United States. Bureau of Transportation Statistics. This point shapefile depicts Amtrak inter-city railroad passenger terminals in the United States and Canada. Attribute data include services and pa... United States. Bureau of Transportation Statistics.
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This line shapefile shows the outlines of major calderas and impact structures in the United States. This layer is part of the Geologic Map of the ... Geological Survey (U.S.).
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.
2001. National Atlas of the United States. The Bathymetric Shaded Relief of North America map layer shows depth ranges using colors, with relief enhanced by shading. The image was derived fr... National Atlas of the United States.