Filters: Subject: "Coal trade" Type: "Text"
1 - 25 of 2
| Title | Date | Type | ||
|---|---|---|---|---|
| 1 |
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Case study of underground coal mining productivity in Utah | 1981-12 | Text |
| 2 |
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Government and labor: the coal industry, 1946-1947 | 1967-07 | Text |
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