TY JOUR TI QUANTITY AND DISTRIBUTION OF CASPIAN ROACH, BREAM AND PIKE PERCH UNDERYEARLINGS IN THE NORTH-WEST OF THE CASPIAN SEA IN CONDITIONS OF THE VOLGA HIGH WATER AND LOW WATER RUN OFF KW quantity KW distribution KW area KW salinity KW depth KW productivity KW roach KW bream KW pike perch KW underyearlings KW whitebait KW the northern part of the Caspian Sea KW the Volga river run-off KW high water and low water years KW sea water area JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Belogolova, L.. AU Solokhina, T.. PY 2018 IS PB Astrakhan State Technical University