27 Geology Books Lot MAPS INCLUDED USGS Professional Papers Volcanology Ash-Flow

Studies in Volcanology (R. Coats): The Circle Creek Rhyolite, NV. USGS PP 729-A: Volcanic Stratigraphy of the Quaternary Rhyolite Plateau, Yellowstone. USGS PP 919: Volcanic Suites. Timber Mountain-Oasis Valley, NV.