The History of Zinc Mining in Friedensville, Pennsylvania.
| Autor: | Kaas, L. Michael |
|---|---|
| Zdroj: | Mining History Journal; 2016, Vol. 23, p17-42, 26p, 18 Black and White Photographs, 4 Maps |
| Databáze: | Supplemental Index |
| Externí odkaz: |
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| Autor: | Kaas, L. Michael |
|---|---|
| Zdroj: | Mining History Journal; 2016, Vol. 23, p17-42, 26p, 18 Black and White Photographs, 4 Maps |
| Databáze: | Supplemental Index |
| Externí odkaz: |
|