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Gardner, Eugene Delos | Cost of initial mining excavations | Mineral industries, costs; Mining engineering, costs | 1916 | thesis |
1 - 25 of 1
| Author | Title | Subject | Date | Publication Type | ||
|---|---|---|---|---|---|---|
| 1 |
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Gardner, Eugene Delos | Cost of initial mining excavations | Mineral industries, costs; Mining engineering, costs | 1916 | thesis |