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Nonmarine Mollusks of Late Cretaceous Age from Wyoming, Utah, and Colora...
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Paleocene Fresh-Water Mollusks from Southern Montana
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Cretaceous Foraminifera from the Greenhorn, Carlile, and Cody Formations...
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Geohydrology of the Madison and Associated Aquifers in Parts of Montana,...
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Nonmarine Ostracodes in the Lakota Formation, Lower Cretaceous, from Sou...
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Geology of the Fort Peck Area, Garfield, McCone and Valley Counties, Mon...
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Ecology and Distribution of Major Diatom Ecotypes in the Southern Fort U...
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Bedload and River Hydraulics, Inferences from the East Fork River, Wyomi...
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Fresh-Water Mollusks of Cretaceous Age from Montana and Wyoming : Usgs Professional Paper 233-A

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