PECULIARITES OF FORMING OF COAL SEAMS OF DEEP HORIZONS OF LVIV-VOLUN BASIN. PAPER 1. SERPUKHOVIAN COAL SEAM ʋ 6 von SHULGA, V.F., MATROFAJLO, M.M., KOSTYK, I.Ye., KOROL, N.D.

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PECULIARITIES OF FORMING OF COAL SEAMS OF DEEP HORIZONS OF LVIV-VOLUN BASIN.Paper 2. Visean coal seam ʋ03 von SHULGA, V.F., MATROFAJLO, M.M., KOSTYK, I.O., KOROL, N.D.

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