✦ LIBER ✦

A combined cutting and roller bit for drilling blast holes in quarries, and the prospects for its use

✍ Scribed by B. A. Katanov

Publisher: Springer
Year: 1969
Tongue: English
Weight: 342 KB
Volume: 5
Category: Article
ISSN: 1573-8736
DOI: 10.1007/bf02501719

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