An Analysis of the Coal Mining Industry in the United States.
| Autor: | Kecojevic, Vladislav1 vuk2@psu.edu, Larry Grayson, R.1 |
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| Zdroj: | Minerals & Energy. Jun2008, Vol. 23 Issue 2, p74-83. 10p. 4 Graphs, 1 Map. |
| Databáze: | Academic Search Ultimate |
| Externí odkaz: |
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