Stratigraphy and petrology of the Permian rocks of southwestern Montana /
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| Formato: | Libro |
| Lenguaje: | English |
| Publicado: |
Washington :
U.S. Government Printing Office,
1964.
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| Colección: | U.S. Geological Survey. Professional paper
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| Materias: |
| Notas: | Geology of Permian rocks in the western phosphate field. |
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| Descripción Física: | vi, 275-569 páginas : ilustraciones ; 29 cm. |