mardenli, omar, Mahdi Saleh Mohammad Alkerwi, and Hadi Awad Hassooni. “A Genetic Evaluation Of Some Reproductive Traits Of Holstein-Friesian Cattle In Five Syrian Dairies”. ISPEC Journal of Agricultural Sciences 5, no. 1 (March 9, 2021): 1-9. Accessed May 17, 2021. https://ispecjournal.com/index.php/ispecjas/article/view/132.