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Start Over You searched for: Author United States. Bureau of Transportation Statistics Remove constraint Author: United States. Bureau of Transportation Statistics Format Shapefile Remove constraint Format: Shapefile Publisher United States. Bureau of Transportation Statistics Remove constraint Publisher: United States. Bureau of Transportation Statistics Subject Lead Remove constraint Subject: Lead Institution Stanford Remove constraint Institution: Stanford Place Washington (D.C.) Remove constraint Place: Washington (D.C.) Place Puerto Rico Remove constraint Place: Puerto Rico Year 1978 Remove constraint Year: 1978

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1978. 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 lead (Pb) 3... United States. Bureau of Transportation Statistics.