TY JOUR TI WATER BIOLOGICAL RESOURCES OF REPUBLIC OF MORDOVIA. SURA RIVER KW aquatic biological resources KW the Sura River KW the Republic of Mordovia KW forage base KW fish products KW ichthyofauna KW fish productivity JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Asanov, A.. AU Nosov, A.V. PY 2020 IS PB Astrakhan State Technical University