Tatyana Aleksandrova. AN EXPERIMENTAL AND THEORETICAL APPROACH TO THE ASSESSMENT OF THE SPECIFIC SURFACE OF APATITE-NEPHELINE ORE IN THE PROCESS OF GRINDING. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, 2015. https://doi.org/10.5593/sgem2015/b11/s4.073