Observations with geophone [microform]
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| Corporate Author: | |
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| Other Authors: | |
| Format: | Government Document Microfilm Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified],
1920.
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| Series: | Report of investigations (United States. Bureau of Mines) ;
2102. |
| Subjects: |
| Item Description: | Record is based on bibliographic data in CIS Index to U.S. Executive Branch Documents, 1910-1932. Reuse except for individual research requires license from LexisNexis Academic & Library Solutions. [on use of device to detect underground sounds in mining operations] |
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| Physical Description: | 5 pages ; cm. |
| Reproduction Note: | Microfiche. |
| Citation/References Note: | CIS Index to U.S. Executive Branch Documents, 1910-1932 Part 4. |