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Design and operation of the coal planer, Ruhr District, Germany
| Author: | Buch, John W. |
|---|---|
| Year: | 1946 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7377 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7377 |
| Subjects: | Coal mines and mining--Germany--Ruhr (Region) |
| Coal-mining machinery | |
| Link: | https://hdl.handle.net/2027/mdp.39015078535534 |
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