TY JOUR TI ANALYSIS OF THE EPIZOOTIC SITUATION FOR CATTLE LEUKEMIA IN KHABAROVSK REGION KW leukemia KW cattle KW monitoring KW infection KW epizootic process JO Bulletin of KSAU AU Shul'ga, N.N. AU Shul'ga, I.S. AU Plavshak, L.P. AU Dikunina, S.S. PY 2015 IS PB Krasnoyarsk State Agrarian University