Analyses of tipple and delivered samples of coal collected during fiscal year 1974 / by J.B. Janus.
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| Main Author: | |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington, DC] :
U.S. Dept. of the Interior, Bureau of Mines,
[1975]
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| Series: | Report of investigations (United States. Bureau of Mines) ;
7997. |
| Subjects: |