 |
|
Technology of lignitic coals : in two parts ;
| Year: | 1954 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7692 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7692. |
| Subjects: | Coal mines and mining |
| Lignite | |
| Link: | https://hdl.handle.net/2027/mdp.39015077564584 |
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