Author: | Kudlich, Rudolf H., |
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Year: | 1923 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
SUDOC: | I 28.23:2520 |
Series: | Report of investigations / United States. Bureau of Mines ; |
Report Number: | 2520 |
Subjects: | Anthracite coal |
Anthracite coal industry | |
Antracite coal mines and mining | |
Link: | https://hdl.handle.net/2027/mdp.39015086546309 |