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Gunnar Widforss Catalogue Raisonné Project
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Breed and Roat 1974

William Breed and Eveln Roat. Geology of the Grand Canyon. Flagstaff: Museum of Northern Arizona, 1974.
Record last updated January 21, 2020. Please note that the information on this and all pages is periodically reviewed and subject to change.
Citation: Petersen, Alan. Literature: Breed and Roat 1974. Gunnar Widforss Catalogue Raisonné Project. (accessed on December 3, 2021).