Hassan RK. ANALYTICAL STUDY TO ESTIMATE THE COST FUNCTIONS, PRODUCTIVITY AND OPTIMAL SIZE OF THE FISH FARMS IN THE PROVINCE OF BABYLON IN 2010. DASJ [Internet]. 2011 Jun. 30 [cited 2026 Apr. 26];3(1):93-100. Available from: https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3014