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Author
Series
Geological Survey professional paper volume 440-B-1
U.S. Geological Survey professional paper volume 440-KK
U.S. Geological Survey professional paper volume 440-KK
36) Studies of the Permian Phosphoria formation and related rocks, Great Basin-Rocky Mountain region
Series
U.S. Geological Survey professional paper volume 1163-A, B, C, D
Formats