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A Century of Research at Petrified Forest National Park, 1906-2006: Geology & Paleontology
Carving Grand Canyon: Evidence, Theories and Mystery
Ancient Landscapes of the Colorado Plateau
Sedona Through Time: A Guide to Sedona's Geology
Geology of the Surprise Canyon Formation of the Grand Canyon, Arizona
Plateau: Defining the Colorado Plateau
The Natural History of the San Francisco Peaks by Gwendolyn L. Waring, Ph.D.