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WELLER, T STLOUIS AC SCI, V10, P66
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WELLER, J GEOLOGY, V9, P144
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WELLER, J GEOLOGY, V9, P140
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WELLER, T STLOUIS AC SCI, V15, P264
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GEOLOGICAL SURVEY IL, V3, P456
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AM GEOLOGIST, V15, P322
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MISSOURI GEOLOGICAL, V4, P47