TY JOUR TI Methods of determining stocks of commercial fish species and fish products in inland water bodies and estimation of their reliability (case of Kenozero National Park) KW Kenozero National Park KW Kenozero KW Lekshmozero KW ichthyomass KW fish products KW indirect and direct research methods JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Dvoryankin, G.A. PY 2022 IS PB Astrakhan State Technical University