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1by Coats, Robert R. (Robert Roy), 1910-1995“...Geological Survey bulletin ;...”
Published 1964
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3by Erickson, Ralph Leroy, 1923-“...Geological Survey bulletin ;...”
Published 1966
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6Published 1993“...U.S. Geological Survey bulletin ;...”
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7by Sheehan, Peter M.“...U.S. Geological Survey bulletin ;...”
Published 1993
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8by Ketner, Keith B., 1921-2019“...U.S. Geological Survey bulletin ;...”
Published 1993
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9