Geology and coal resources of Belmont County, Ohio /
| Hlavní autor: | |
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| Korporace: | |
| Typ dokumentu: | Kniha |
| Jazyk: |
angličtina |
| Vydavatel: |
Washington :
United States Government Printing Office,
1963.
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| Edice: |
Geological Survey Professional Paper ;
380 |
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