TY JOUR TI EFFECT OF PRODUCTION-RELATED FACTORS ON THE STRUCTURE OF THE MOUTH DISEASE IN WORKERS COPPER COMPANY KW copper smelting production KW smoking KW periodontal diseases KW precancer JO Actual problems in dentistry AU Lestev, M.P. AU Adrianovsky, V.I. AU Beresneva, O.Y. AU Elovicova, T.M. AU Lipatov, G.Y. AU Molvinsky, V.S. PY 2013 IS 9 PB TIRAZH Publishing House