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Development and introduction of three-cutter drilling bits for medium-hardness rocks

✍ Scribed by P. I. Sopin; A. S. Yudin; V. I. Pozdnyakov

Publisher: Springer
Year: 1979
Tongue: English
Weight: 384 KB
Volume: 15
Category: Article
ISSN: 0009-2355
DOI: 10.1007/bf01176324

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