TY JOUR TI THEORY AND PRACTICE OF RURAL FARMS DIGITALIZATION OF THE REPUBLIC OF TATARSTAN KW digital economy KW technical base KW digital technologies KW economic approach KW economic efficiency JO Vestnik of Kazan State Agrarian University AU Subaeva, A.K. AU Aleksandrova, N.R. PY 2020 IS 15 PB Kazan state agrarian University