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All Subjects: Grand Canyon National Park (Ariz.)
Creators: Appalachia
Creators: Cooperative National Park Resources Studies Unit, University of Arizona

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Boat Survey of the Grand Canyon

ContributorsMitchell, Guy E. (Author) / Appalachia (Publisher)

Created1924-04-01

DescriptionBoat Survey of the Grand Canyon, Appalachia, Vol. XV, No. 4.

Improving Visitor Communications in Grand Canyon National Park

ContributorsGreenberg, Laura B. (Author) / Underhill, A. Heaton (Author) / Cooperative National Park Resources Studies Unit, University of Arizona (Publisher)

Created1986-03

DescriptionCooperative National Park Resources Study Unit of Arizona, a special report, v no. 4, improving viistor communciation in Grand Canyon National Park