✦ LIBER ✦

Flame drilling of blast holes in fissured quartzites : 2F, 2T. Soviet Min. Sci. V9, N4, July–Aug. 1973, P449–451

✍ Scribed by I.A. Fedin; V.P. Dmitrin; B.V. Zakhvatkin

No coin nor oath required. For personal study only.

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