Classsfication of coal reserves at the Tyagliv and Lyubelya fields of the South-Western coal-bearing region of the Lviv-Volyn basin based on the main natural indicators von I. O. Kostyk, I. V. Buchynska, A. V. Poberezhskyi

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On synonymics of coal seams and limestones of the carboniferous system of the Lviv-Volyn basin von I. O. Kostyk, I. V. Buchynska, M. D. Korol, A. V. Poberezhskyi

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