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SCIENCE --- Earth Sciences / Geology --- Submarine geology --- Coasts --- Geology - General --- Geology --- Earth & Environmental Sciences --- Evaluation --- Research --- Coastal zone management --- Submarine geology. --- Geological Survey (U.S.) --- Geological oceanography --- Geology, Submarine --- Marine geology --- U.S.G.S. --- U.S. Geological Survey --- United States. --- Servicio Geológico de los Estados Unidos --- United States Geological Survey --- USGS --- Geographical and Geological Survey of the Rocky Mountain Region (U.S.) --- Geographical Surveys West of the 100th Meridian (U.S.) --- Geological and Geographical Survey of the Territories (U.S.)

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Electronic books. -- local. --- Geography -- Research -- United States. --- Geological Survey (U.S.). --- Geography --- Earth & Environmental Sciences --- Geography-General --- Research --- Geological Survey (U.S.) --- U.S.G.S. --- U.S. Geological Survey --- United States. --- Servicio Geológico de los Estados Unidos --- United States Geological Survey --- USGS --- Cosmography --- Earth sciences --- World history --- Geographical and Geological Survey of the Rocky Mountain Region (U.S.) --- Geographical Surveys West of the 100th Meridian (U.S.) --- Geological and Geographical Survey of the Territories (U.S.)

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In 1923, America paid close attention, via special radio broadcasts, newspaper headlines, and cover stories in popular magazines, as a government party descended the Colorado to survey Grand Canyon. Fifty years after John Wesley Powell's journey, the canyon still had an aura of mystery and extreme danger. At one point, the party was thought lost in a flood. Something important besides adventure was going on. Led by Claude Birdseye and including colorful characters such as early river-runner Emery Kolb, popular writer Lewis Freeman, and hydraulic engineer Eugene La Rue, the exped

Colorado River (Colo.-Mexico) - Description and travel. --- Colorado River (Colo.-Mexico) -- Description and travel. --- Colorado River (Colo.-Mexico) - Environmental conditions. --- Colorado River (Colo.-Mexico) -- Environmental conditions. --- Dams - Colorado River (Colo.-Mexico) - History - 20th century. --- Dams -- Colorado River (Colo.-Mexico) -- History -- 20th century. --- Geological Survey (U.S.). --- Geological Survey (U.S.) -- Biography. --- Geological Survey (U.S.) -- History -- 20th century. --- Grand Canyon (Ariz.) - Description and travel. --- Grand Canyon (Ariz.) - Environmental conditions. --- Grand Canyon (Ariz.) -- Environmental conditions. --- River surveys - Colorado River (Colo.-Mexico) - History - 20th century. --- River surveys -- Colorado River (Colo.-Mexico) -- History -- 20th century. --- Water resources development - Arizona - Grand Canyon - History - 20th century. --- Water resources development -- Arizona -- Grand Canyon -- History -- 20th century. --- Water-supply - Political aspects - Arizona - Grand Canyon - History - 20th century. --- Water-supply -- Political aspects -- Arizona -- Grand Canyon -- History -- 20th century. --- River surveys --- Dams --- Water-supply --- Water resources development --- Regions & Countries - Americas --- History & Archaeology --- United States Local History --- History --- Political aspects --- Geological Survey (U.S.) --- Grand Canyon (Ariz.) --- Colorado River (Colo.-Mexico) --- Description and travel. --- Environmental conditions. --- Availability, Water --- Water availability --- Water resources --- River surveying --- Rivers --- Surveying --- U.S.G.S. --- U.S. Geological Survey --- United States. --- Servicio Geológico de los Estados Unidos --- United States Geological Survey --- USGS --- Energy development --- Natural resources --- Public utilities --- Water utilities --- Diversion structures (Hydraulic engineering) --- Earthwork --- Hydraulic structures --- River engineering --- Barrages --- Surveys --- Geographical and Geological Survey of the Rocky Mountain Region (U.S.) --- Geographical Surveys West of the 100th Meridian (U.S.) --- Geological and Geographical Survey of the Territories (U.S.)