TY JOUR TI Dependence of the effectiveness of anthelmintic treatments on the multiplicity of their treatment in dogs living in megacities KW dogs KW prevention KW parasites KW helminthes KW ectoparasites KW fleas KW Toxocara canis KW toxocarosis KW deworming KW NexGard Spectra KW milbemycin oxime KW afoxolaner JO Russian veterinary journal AU Danilova, M.A. AU Generalov, A.A. AU Akbaev, R.M. PY 2019 IS 2019 PB Publishing house "Logos Press"