Raoof, Salim Omar, بيرخدر دلياك, and Younis Ahmad SheakhMohamad. 2016. “Role of Sex Chromatin on Performance in the Crossbred Cows”. Journal of Biotechnology Research Center (JOBRC) 10 (2):6-11. https://doi.org/10.24126/jobrc.2016.10.2.472.