Endurance , Keyamo, and Emmanuel Nathan. β€œAn Analysis of Production Theory in the Agricultural and Service Sectors of Nigerian Economy, 1981-2019”. Journal of Global Economics and Business 2, no. 6 (July 1, 2021): 69–88. Accessed December 22, 2024. https://journalsglobal.com/index.php/jgeb/article/view/59.