TY JOUR TI ASSESSMENT OF PHYTOPLANKTON AS FOOD RESERVE IN MIDDLE CASPIAN KW phytoplankton KW diatoms KW abundance KW biomass KW freshwater. JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Zimina T, a.. AU Ardabyeva, A.. AU Kotelnikov, A.. PY 2020 IS PB Astrakhan State Technical University