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Dredging Pennsylvania anthracite
| Author: | Corgan, Joseph A. |
|---|---|
| Year: | 1942 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7213 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7213 |
| Subject: | Anthracite coal--Pennsylvania |
| Link: | https://hdl.handle.net/2027/mdp.39015077570862 |
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