TY JOUR TI RUSSIAN CLAY DEPOSITS AND THEIR POTENTIAL FOR IMPORT SUBMITION OF CONSUMPTION OF RAW MATERIAL BASES IN THE PRODUCTION OF PORCELAIN TILES KW raw materials KW clay KW porcelain KW import substitution KW water absorption KW loss on firing JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Moshnyakov, M.. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov