TY JOUR TI VETERINARY PREPARATIONS BASED ON OXALIC ACID AND THEIR EFFICIENCY IN VARROATOSIS KW bees KW varroatosis KW oxalic acid KW efficacy KW safety JO Bulletin of KSAU AU Dol'nikova, T.Y. AU Domatsky, A.N. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University