Marine cycles in the lower Montana group, Montana and South Dakota /
| Main Author: | |
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
[1976]
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| Subjects: |
| Physical Description: | xvi, 310 leaves : illustrations, maps. |
|---|---|
| Bibliography: | Bibliography: leaves 249-257. |