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By: Nitecki, Matthew H.Edition:Publication info: Chicago, Field Museum of Natural History, 1971Volume: v.23:no.1 (1971)Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Arizona Geology, Stratigraphic Grand Canyon National Park Petrology Precambrian Sedimentary structuresBHL Collections:
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By: Olson, Everett Claire, - Bolles, Kathryn.Edition:Publication info: Chicago, Field Museum of Natural History, 1975Volume: v.33:no.15 (1975)Series:Holding Institution: University Library, University of Illinois Urbana ChampaignSubjects: Amphibians, Fossil Burrowing animals, Fossil Carboniferous Lung-fishes, Fossil Paleontology Permian Sedimentary structures United StatesBHL Collections:
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By: Shabica, Charles W.Edition:Publication info: Chicago, Field Museum of Natural History, 1978Volume: v.33:no.29 (1978)Series:Holding Institution: Field Museum of Natural History LibrarySubjects: Geology Geology, Stratigraphic Illinois Pennsylvanian Sedimentary structuresBHL Collections: