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Damming Grand Canyon the 1923 USGS Colorado River expedition /

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Wedi'i Gadw mewn:
Prif Awdur: Boyer, Diane E.
Awduron Corfforaethol: Geological Survey (U.S.), ebrary, Inc
Awduron Eraill: Webb, Robert H.
Fformat: Electronig eLyfr
Iaith:Saesneg
Cyhoeddwyd: Logan, Utah : Utah State University Press, c2007.
Pynciau:
Geological Survey (U.S.) > History > 20th century.
Geological Survey (U.S.) > Biography.
River surveys > Colorado River (Colo.-Mexico) > History > 20th century.
Dams > Colorado River (Colo.-Mexico) > History > 20th century.
Water-supply > Political aspects > Arizona > Grand Canyon > History > 20th century.
Water resources development > Arizona > Grand Canyon > History > 20th century.
Grand Canyon (Ariz.) > Description and travel.
Colorado River (Colo.-Mexico) > Description and travel.
Grand Canyon (Ariz.) > Environmental conditions.
Colorado River (Colo.-Mexico) > Environmental conditions.
Electronic books.
Mynediad Ar-lein:An electronic book accessible through the World Wide Web; click to view
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Eitemau Tebyg: Damming Grand Canyon

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