Damming Grand Canyon the 1923 USGS Colorado River expedition /

Wedi'i Gadw mewn:

Manylion Llyfryddiaeth
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
Tagiau:	Ychwanegu Tag Dim Tagiau, Byddwch y cyntaf i dagio'r cofnod hwn!

Byddwch y cyntaf i adael sylw!

Eitemau Tebyg