Al-Khalidi, Akram Ahmed Hassan. “Pathological Changes Induced by Systemic Bacterial Infections of Layer Hens Suffered from Respiratory Signs”. Diyala Journal for Veterinary Sciences 1, no. 2 (July 2, 2023): 99–109. Accessed November 21, 2024. https://djvs.uodiyala.edu.iq/index.php/djvs/article/view/102.