AGH Journal of Mining and Geoengineering
AGH Journal of Mining and Geoengineering > 2012 > Vol. 36, no. 3 > 269-282
AGH Journal of Mining and Geoengineering > 2012 > Vol. 36, no. 3 > 253-261
AGH Journal of Mining and Geoengineering > 2012 > Vol. 36, no. 3 > 269-282
AGH Journal of Mining and Geoengineering > 2012 > Vol. 36, no. 3 > 253-261