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The American journal of science (1880) |
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Abstracts of North American geology |
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A new system of geology (1829)Andrew Ure |
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Geology and agriculture (1892)Louisiana Geological Survey. |
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California journal of mines and geology |
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California journal of mines and geology |
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California journal of mines and geology |
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Bulletin (1889)Geological Society of America. |
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Bulletin (1889)Geological Society of America. |
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Bulletin (1889)Geological Society of America. |
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