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Environment
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Geoscientific Information
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staging
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Raster
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1. Scanned 250k Scale Topographic Maps (Decollared), Arizona, 1970 to 1995
1970. United State. Geological Survey. This data set originated as a Digital Raster Graphic (DRG) produced from a scanned USGS topographic map. The DRG included the collar information an... United State. Geological Survey.