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RT @USGS_Pubs: #TBT Check out this 100 year old publication: Colorado River and its utilization, 1916 https://t.co/hlcaZqAgbZ https://t.co/…
RT @USGS_Pubs: #TBT Check out this 100 year old publication: Colorado River and its utilization, 1916 https://t.co/hlcaZqAgbZ https://t.co/…
RT @USGS_Pubs: #TBT Check out this 100 year old publication: Colorado River and its utilization, 1916 https://t.co/hlcaZqAgbZ https://t.co/…
#TBT Check out this 100 year old publication: Colorado River and its utilization, 1916 https://t.co/hlcaZqAgbZ https://t.co/Sa6Kv2fdcV