Khattab, Adel Salah, Ahmed Hamed Salem, Manal Kassab, János Tőzsér, and Ahmed Amr Gabr. 2021. “A Comparison Between Different Selection Indexes for Milk and Udder Health Traits on Holstein-Friesian Cows in Egypt”. Animal Welfare, Ethology and Housing Systems (AWETH) 17 (1): 42-50. https://doi.org/10.17205/SZIE.AWETH.2021.1.042.