Digital Geologic-GIS Map of the Mammoth 15' Quadrangle, Wyoming and Montana (NPS, GRD, GRI, YELL, MAMM digital map) adapted from a U.S. Geological Survey unpublished mylar map by Christiansen, Prostka, Ruppel and Smedes (1972)
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The Digital Geologic-GIS Map of the Mammoth 15' Quadrangle, Wyoming and Montana is composed of GIS data layers and GIS tables, and is available in the following GRI-...



