Al-Marjan, K. S. N. and Abdullah, S. M. (2015) “Trichodina Sp. as Bioindicator for Evaluation of Biochemical Oxygen Demand (Bod5) in Aquaculture Fish Farms (Ponds)”, Science Journal of University of Zakho, 3(1), pp. 27–31. Available at: https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/80 (Accessed: 25 April 2024).