Radoslava Bekova, Bogdan Prodanov, Todor Lambev. INFLUENCE OF THE ANTHROPOGENIC PRESSURE ON VARNA AND BELOSLAV LAKES AND THEIR ICHTHYOFAUNA. SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, 2022, pp. 249-256. https://doi.org/10.5593/sgem2022/5.1/s20.032