TY JOUR TI HELMINTHIASIS AND GROUP THERAPY EFFECTIVENESS IN HORSES IN THE SHEBALINSKY DISTRICT OF GORNY ALTAI KW helminths KW horses KW infestation KW anthelmintics KW population size KW system of measures JO Bulletin of KSAU AU Marchenko, V.A. AU Todoshev, A.P. AU Efremova, E.A. AU Biryukov, I.V. AU Kurinov, D.A. AU Kravchenko, I.A. PY 2026 IS 0 PB Krasnoyarsk State Agrarian University