Advancing coal mining technology research, development, and demonstration in fiscal year 1977 /
| Corporate Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
Dept. of the Interior, Bureau of Mines,
1977.
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| Series: | Information circular (United States. Bureau of Mines) ;
8730. |
| Subjects: |
| Physical Description: | 3 unnumbered pages, 13 pages ; 27 cm. |
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