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Zelalem, Abrham, Eyaya Belay, and Abel Markos. “Temporal Trajectory Analysis of Lake Surface Area: Case Study on Lake Tana, Ethiopia”. Ethiopian Renaissance Journal of Social Sciences and the Humanities 5, no. 1 (June 2, 2018). Accessed May 22, 2025. https://erjssh.uog.edu.et/index.php/ERJSSH/article/view/1.