Proceedings of the ninth annual Drilling Symposium : theme, Exploration drilling, October 8-10, 1959 /
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| Format: | Conference Proceeding Book |
| Language: | English |
| Published: |
University Park, Pa. :
Pennsylvania State University, College of Mineral Industries,
1960.
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| Series: | Bulletin of the Mineral Industries Experiment Station ;
no. 72. Mining engineering series. |
| Subjects: |
| Physical Description: | 124 pages : illustrations ; 28 cm. |
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