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National Transportation Atlas Database (NTAD) Metadata
Metadata for geospatial datasets on USDOT's National Transportation Atlas Database (NTAD)
— Organization: Department of Transportation
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USDOT Geospatial Metadata
Geospatial metadata for USDOT
— Organization: Department of Transportation
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Environmental Dataset Gateway ISO Geospatial Metadata
Web accessible folder harvest only ISO records
— Organization: U.S. Environmental Protection Agency
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