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1Published 1976“...Geological Survey circular ;...”
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2Published 1979“...Geological Survey circular ;...”
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3Published 1979“...Geological Survey circular ;...”
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4
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5Published 1981“...Geological Survey circular ;...”
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6Published 1982“...Geological Survey circular ;...”
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7Published 1983“...Geological Survey circular ;...”
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9by Dale, R. H. (Robert H.), 1931-, French, James J., 1929-, Wilson, Harry Dennis, 1919-“...Geological Survey circular ;...”
Published 1964
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10by Roberts, Albert Eugene, 1921-“...Geological Survey circular ;...”
Published 1975
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11by Scott, E. W.“...Geological Survey circular ;...”
Published 1983
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12by Peterson, Donald W.“...Geological Survey circular ;...”
Published 1968
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13by Ritter, John R.“...Geological Survey circular ;...”
Published 1970
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14by McCulloch, David S., 1929-“...Geological Survey circular ;...”
Published 1970
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15by Nichols, Frederic H. (Frederic Hone), 1937-“...Geological Survey circular ;...”
Published 1973
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16by Yerkes, R. F., 1923-“...Geological Survey circular ;...”
Published 1974
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17by Wesson, R. L. (Robert L.)“...Geological Survey circular ;...”
Published 1974
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18by Roberts, Albert Eugene, 1921-“...Geological Survey circular ;...”
Published 1975
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19
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