TY JOUR TI Fish production potential of lakes of Republic of Karelia at present stage KW Karelia KW ecoregion KW fishing KW ichthyomass KW fish productivity KW use of fish resources JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Cherepanova, N.. AU Georgiev, A.. AU Gorbachev, S.. AU Shirokov, V.. PY 2020 IS PB Astrakhan State Technical University