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RT @USGS: [PUB] – Classic USGS Publication - Guidebook of the Western United States: Part D - The Shasta Route and Coast Line, USGS Bulleti…
RT @USGS: [PUB] – Classic USGS Publication - Guidebook of the Western United States: Part D - The Shasta Route and Coast Line, USGS Bulleti…
RT @USGS: [PUB] – Classic USGS Publication - Guidebook of the Western United States: Part D - The Shasta Route and Coast Line, USGS Bulleti…
[PUB] – Classic USGS Publication - Guidebook of the Western United States: Part D - The Shasta Route and Coast Line, USGS Bulletin 614 (1915) https://t.co/rncha7sOOq #geology #guidebook #Washington #Oregon #California https://t.co/Q4LCkS97Ik