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Geologic and structure maps of the Wallace 1 degree by 2 degrees quadrangle, Montana and Idaho: A digital database Geologic and structure maps of the Wallace 1 degree by 2 degrees quadrangle, Montana and Idaho: A digital database
This dataset was digitized by the U.S. Geological Survey EROS Data Center and U.S. Geological Survey Spokane Field Office for input into an Arc/Info geographic information system (GIS). The digital geologic map database can be queried in many ways to produce a variety of derivative geologic maps.