TY JOUR TI PRODUCTIVITY AS A CRITERION OF THE LEVEL OF DEVELOPMENT ENTERPRISES OF CONSTRUCTION MATERIALS INDUSTRY KW productivity KW depreciation of equipment KW capital intensity KW capital productivity KW training JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Chizhova, E.N. AU Balabanova, G.G. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov