Abd El-Aziz, Manal H.M., Sanad T. Atallah, Adel A.S. Elnabtiti, and Mostafa A. Mandour. “Productive and Economic Efficiency of Some Layer Farms in Egypt ”. Journal of Advanced Veterinary Research 13, no. 10 (January 14, 2024): 2183-2187. Accessed May 18, 2024. https://www.advetresearch.com/index.php/AVR/article/view/1722.