TY JOUR TI CHARACTERISTIC OF ELEMENT STRUCTURE OF WATER r. SHAGAN KW the river Shagan KW the lake Atomnoye KW chemical elements KW maximum concen-tration limit JO Bulletin of KSAU AU Tashekova, A.Z. AU Lukashenko, S.N. AU Koygeldinova, M.T. AU Mukhamediyarov, N.Z. PY 2016 IS PB Krasnoyarsk State Agrarian University