✦ LIBER ✦

A high-power hydraulic drill for breaking hard rock

✍ Scribed by F. F. Voitsekhovskaya

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Effectiveness of the use of high impact

✍ B. V. Voitsekhovskii; L. A. Mitin; F. F. Voitsekhovskaya 📂 Article 📅 1973 🏛 Springer 🌐 English ⚖ 280 KB

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