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Geology and phosphate deposits of the Permian rocks in Central western Montana / by Roger W. Swanson.

By: Swanson, Roger W, 1914-.
Material type: materialTypeLabelBookSeries: Geological Survey Professional Paper; 313-F.Publisher: Washington : United States Government Printing Office, 1973Description: P. 779-833 + 1 map. --.Content type: Texto (visual) Media type: sin mediación Subject(s): Geología | Montana
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