1987. 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 particulate... United States. Bureau of Transportation Statistics.
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1990. 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 particulate... United States. Bureau of Transportation Statistics.
1997. 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 particulate... United States. Bureau of Transportation Statistics.
2006. 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 particulate... United States. Bureau of Transportation Statistics.
1971. 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 sulfur diox... United States. Bureau of Transportation Statistics.
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 sulfur diox... United States. Bureau of Transportation Statistics.
2010. 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 sulfur diox... United States. Bureau of Transportation Statistics.
2014. Hunt, Raquel and United States. Bureau of Transportation Statistics. The Rail Network is a comprehensive database of United States railway system at 1:24,000 to 1:100,000 scale. This polyline shapefile depicts Amtrak... United States. Bureau of Transportation Statistics.
2013. Firestine, Theresa. Over 55 percent of the approximately 7,100 passenger transportation terminals in the United States offer travelers the ability to connect among the... United States. Bureau of Transportation Statistics.
2010. Geological Survey (U.S.) and United States. Bureau of Transportation Statistics. This point shapefile depicts cities and towns in the United States, Puerto Rico, and the United States Virgin Islands. A city or town is a place wi... United States. Bureau of Transportation Statistics.