Prohlížení dle autora "Martyaková, Elena V."
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The issue of income from operating Ukraine coal deep mines
Dvořáček, Jaroslav; Martyaková, Elena V.; Kochura, Ilona V.; Sousedíková, Radmila; Savič, Igor (GeoScience Engineering. 2012, vol. 58, no. 4, p.59-65.)