& et al., M. 2018. ESTIMATING PROFIT AND COST FUNCTIONS AND ECONOMIC AND TECHNICAL EFFICIENCIES OF WHEAT PRODUCTION NEJAF PROVINCE – AL-ABBASSI TOWNSHIP (A CASE STUDY) FOR SEASON 2016. IRAQI JOURNAL OF AGRICULTURAL SCIENCES. 49, 3 (Dec. 2018). DOI:https://doi.org/10.36103/ijas.v49i3.111.