Stratigraphy and geologic history of the Montana group and equivalent rocks, Montana, Wyoming, and North and South Dakota
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| Description | article by James R. Gill & William A. Cobban published 1973 in Geological Survey Professional Paper |
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author: William A. Cobban |
| Publication date | 1973 |
| Language | English |
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| Missing/wrong data? | Edit Wikidata item |