Guide to geologic features affecting coal mine roof / by Robert Lee Stahl.
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| Main Author: | |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Arlington, Va.] :
Dept. of Labor, Mine Safety and Health Administration,
1979.
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| Series: | Informational report (United States. Mine Safety and Health Administration) ;
1101. |
| Subjects: |
| Item Description: | Errata sheet correcting arrangement of photographs on page 3 was issued also. |
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| Physical Description: | 18 pages : illustrations ; 27 cm. |
| Bibliography: | Bibliography: page 17. |