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Research and Technologic Work on Coal and Related Investigations, 1957
| Year: | 1959 |
|---|---|
| Document Type: | N/A |
| Issuing Agency: | United States. Bureau of Mines. |
| SUDOC: | I 28.27:7905 |
| Series: | Information circular (United States. Bureau of Mines) |
| Report Number: | I. C. 7905 |
| Subject: | Coal -- Research -- United States. |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc67086/ |
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