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RT @USGS: {Pub] – ‘Classic’ USGS Publication - The Glaciation of the Yellowstone Valley North of the Park Bulletin 104 By: Walter Harvey We…
RT @USGS: {Pub] – ‘Classic’ USGS Publication - The Glaciation of the Yellowstone Valley North of the Park Bulletin 104 By: Walter Harvey We…
RT @USGS: {Pub] – ‘Classic’ USGS Publication - The Glaciation of the Yellowstone Valley North of the Park Bulletin 104 By: Walter Harvey We…
{Pub] – ‘Classic’ USGS Publication - The Glaciation of the Yellowstone Valley North of the Park Bulletin 104 By: Walter Harvey Weed (1893) https://t.co/ps6ARpb8jw #yellowstone #glaciers https://t.co/U4iTaS67Z0