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Atlas to accompany monograph XXXI on the geology of the Aspen District, Colorado

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By: Spurr, Josiah Edward, - Spurr, Josiah Edward, - Geological Survey (U.S.)

Publication info: Washington, U.S. Geological Survey, 1898

Holding Institution: Harold B. Lee Library

Subjects: Aspen District (Colo.) Colorado Geology Maps Physical maps Pitkin County