TY JOUR TI The Russian sturgeon blood trace element composition KW chemical elements KW concentration KW blood KW spleen KW Russian sturgeon KW age KW gender JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Zaitsev, V.. AU Chaplygin, V.. AU Chaplygina, J.. AU Ershova, T.. AU Tulepbergenova, A.. PY 2024 IS 2024 PB Astrakhan State Technical University