& et al. B. MEASURING RETURNSS TO SCALE, DISTRIBUTION EFFICIENCY AND ESTIMATING WHEAT PRODUCTION FUNCTION IN DHI QAR PROVINCE. Iraqi J. Agric. Sci. [Internet]. 2019 Dec. 20 [cited 2025 Jul. 4];50(6). Available from: https://www.jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/846