& et al., A. IMPACT OF HERD SIZE ON THE PRODUCTIVE EFFICIENCY OF SHEEP BREEDING PROJECTS AT THE KOKJALI REGION IN NINEVEH GOVERNORATE FOR THE PRODUCTION SEASON 2018. Iraqi J. Agric. Sci. 2020, 51 (6), 1613-1622. https://doi.org/10.36103/ijas.v51i6.1188.