TY JOUR TI PRESENT STATE OF ICHTHYOFAUNA OF MIDDLE AND LOWER STREAM OF THE RIVER SURA KW river Sura KW ichthyofauna KW species JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Artaev, O.. AU Ruchin, A.. AU Klevakin, A.. PY 2013 IS 2013 PB Astrakhan State Technical University