TY JOUR TI DETERMINING THE OPTIMAL MODE OF OPERATION OF THE DEVICE “AEROTON” FOR LAYING HENS KW JO Agrarian Bulletin of the AU Gegamyan, N.S. AU Kiselev, L.Y. AU Kiselev, V.L. AU Novikova, N.N. AU Neverova, O.P. AU Harlap, S.Y. PY 2019 IS 180 PB Ural State Agrarian University