Kovalenko, L. M., & Kovalenko, A. I. (2021). РATHOLOGY OF THE RESPIRATORY TRACT OF PIGS UNDER INFLUENCE OF INFECTIOUS PATIENTS. Bulletin of Sumy National Agrarian University. The Series: Veterinary Medicine, (3 (54), 26-30. https://doi.org/10.32845/bsnau.vet.2021.3.4