TY JOUR TI HYDROCHEMICAL AND HYDROBIOLOGICAL STUDIES OF SOME WATER OBJECTS OF THE VOLGA RIVER DELTA KW hydrochemical monitoring KW hydrobiological studies KW waters objects of the Volga River delta KW indicators of ecological state of the aquatic ecosystems JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Isenalieva, Z.. AU Volkova, I.. AU Nguyen, T.. PY 2014 IS 2014 PB Astrakhan State Technical University