TY JOUR TI ELEMENTS OF CIRCULAR TECHNOLOGIES IN AQUACULTURE KW aquaculture KW reservoir KW the reservoir-cooler KW charge KW air recirculation system KW biofilter KW periphyton KW aquaponics JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Kalaida, M.. AU Khamitova, M.. AU Kalaida, A.. AU Borisova, S.. AU Babikova, V.. PY 2021 IS PB Astrakhan State Technical University