Information Circular: Issue 8714

ยท U.S. Department of the Interior, Bureau of Mines
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United States. Bureau of Mines ์ž‘๊ฐ€์˜ ์ฑ… ๋”๋ณด๊ธฐ

Mineral Resources of the United States: Part 2
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Bulletin: Volumes 108-113
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The Reserve Base of Bituminous Coal and Anthracite for Underground Mining in the Eastern United States
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Contributions to the Data on Theoretical Metallurgy: Volume 14
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Contributions to the Data on Theoretical Metallurgy: Volume 14
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Technical Paper: Issue 336
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Bibliography of Literature on Sampling to July, 1921
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