TY JOUR TI MICROORGANISMS ON THE SURFACE OF STRUCTURES IN LIVESTOCK BUILDINGS KW cement protective coatings KW microbiological environment KW bacteria KW mold fungi KW biocidal additives JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Ledyaykin, N.V. PY 2025 IS 10 PB Belgorod State Technological University named after V.G. Shukhov