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@Jill_hubley A bit of a guide: https://t.co/6AhJFyfC42
@Jill_hubley A bit of a guide: https://t.co/6AhJFyfC42
RT @AZGeology: USGS classic, 'Geology and Geography of the Henry Mountains, Utah' (1953): 244-pages w/ 22 plates. A fence diagram of the ge…
RT @AZGeology: USGS classic, 'Geology and Geography of the Henry Mountains, Utah' (1953): 244-pages w/ 22 plates. A fence diagram of the ge…