Kolev, Vasil. “Age Structure, Growth Rate and Condition Factor of Squalius Orpheus (Cyprinidae) of Maritsa river’s Middle Zone, Bulgaria”. Macedonian Journal of Ecology and Environment 25, no. 1 (July 7, 2023): 11–17. Accessed July 27, 2024. https://mjee.org.mk/index.php/mjee/article/view/216.