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RT @USGS: [PUB] - The geology of Nantucket, Bulletin 53 By: Nathaniel Southgate Shaler (1889) https://t.co/OIcRe3mLW6 #geology #Massachuse…
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RT @USGS: [PUB] - The geology of Nantucket, Bulletin 53 By: Nathaniel Southgate Shaler (1889) https://t.co/OIcRe3mLW6 #geology #Massachuse…