TY JOUR TI SAPROBIOLOGICAL DESCRIPTION OF URBAN WATERCOURCES (THE KUTUM AND THE TSAREV RIVERS) IN ASTRAKHAN KW urban watercourses KW indicator organisms KW pollutants KW zooplankton KW saprobity zone KW saprobity valence KW biocenosis JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU LukinŠ°, D.. AU Biryukova, M.. AU Yurchenko, V.. PY 2019 IS PB Astrakhan State Technical University