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Mining – Informatics, Automation and Electrical Engineering > 2015 > R. 53, nr 4 > 16--21 [tekst ang.], 50--55 [tekst pol.]
Mining – Informatics, Automation and Electrical Engineering > 2015 > R. 53, nr 4 > 16--21 [tekst ang.], 50--55 [tekst pol.]