Derevianchenko, O., & Petrov, R. (2023). MONITORING OF THE EPISOTOTIC SITUATION REGARDING CAUSES OF ECTOPARASITISES OF DOGS AND CATS IN SUMY. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, (4(63), 9-14. https://doi.org/10.32782/bsnau.vet.2023.4.2