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MapAsk USGS maps.
Maps Catalog Record - Electronic Resource Available Contains information on printed domestic topographic maps and selected National Imagery and Mapping Agency nautical charts, aeronautical charts, and topographic maps.- Contributor: Geological Survey (U.S.)
- Date: 2000
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MapUSGS mapping information geographic names information system (GNIS)
Geographic names information system Catalog Record - Electronic Resource Available Contains information about almost 2 million physical and cultural geographic features in the United States. The Federally recognized name of each feature described in the data base is identified, and references are made to a feature's location by state, county, and geographic coordinates.- Contributor: Geological Survey (U.S.)
- Date: 2001