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1“...Geological Survey bulletin ;...”
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2“...Geological Survey bulletin ;...”
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3by Tysdal, Russell G.“...Geological Survey bulletin ;...”
Published 1978
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4by Tysdal, Russell G.“...Geological Survey bulletin ;...”
Published 1978
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5by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1987
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6Published 1990“...U.S. Geological Survey bulletin ;...”
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7by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1991
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8Published 1991“...U.S. Geological Survey bulletin ;...”
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9
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10by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1991
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11by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1990
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12“...Geological Survey bulletin ;...”
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13by Tysdal, Russell G.“...Geological Survey bulletin ;...”
Published 1976
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14Published 1987“...U.S. Geological Survey bulletin ;...”
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15Published 1987“...U.S. Geological Survey bulletin ;...”
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16by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1988
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17by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1988
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18Published 1991“...U.S. Geological Survey bulletin ;...”
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19by Tysdal, Russell G.“...U.S. Geological Survey bulletin ;...”
Published 1987
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20