Seismograph report.
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| Previous Title: | Seismographic report (Pennsylvania State College. Mineral Industries Experiment Station) |
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| Corporate Author: | |
| Format: | Journal |
| Language: | English |
| Published: |
University Park, Pa. :
Geophysical Laboratory,
1947-
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| Subjects: |
| Published: | No. 19 (1946 and 1947)- |
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| Physical Description: | v. ; 28 cm. |