1998. Bureau of Transportation Statistics. The Bureau of Economic Analysis (BEA)database is a Geographic polygon dataset representing county based economic regions for the United States. Bureau of Transportation Statistics.
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1997. Bureau of Transportation Statistics, Harvard Geospatial Library, and Environmental Systems Research Institute, Inc. (ESRI). U.S. National Transportation Atlas Highways represents rural interstates and arteries; and urban freeways, expressways, interstates, arteries and c... Environmental Systems Research Institute, Inc. (ESRI).
1997. Bureau of Transportation Statistics. U.S. National Transportation Atlas Highways represents rural interstates and arteries; and urban freeways, expressways, interstates, arteries and c... Environmental Systems Research Institute, Inc. (ESRI).
1997. Bureau of Transportation Statistics. U.S. National Transportation Atlas Highways represents rural interstates and arteries; and urban freeways, expressways, interstates, arteries and c... Environmental Systems Research Institute, Inc. (ESRI).