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Highways in Grand Canyon National Park
Bureau of Public Roads given supervision of major highway construction in National Parks, cost estimates of three sections totaling 40 mi.
Highways in Grand Canyon National Park
Bureau of Public Roads given supervision of major highway construction in National Parks, cost estimates of three sections totaling 40 mi.
Highways in Grand Canyon National Park
West Construction News
1929
2 pages
4 Figs.
Article (Journal)
English
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Grand Canyon National Park: Assessment of Transportation Alternatives
British Library Online Contents | 2000
|Grand Canyon National Park: Assessment of Transportation Alternatives
British Library Conference Proceedings | 2000
|