TY JOUR TI REVISITING THE STATE OF NATURAL AND ARTIFICIAL REPRODUCTION OF STURGEONS IN THE VOLGA-CASPIAN BASIN KW sturgeons KW natural and artificial reproduction KW productive stocks KW natural populations KW efficiency KW sturgeon hatcheries JO Vestnik of Astrakhan State Technical University. Series: Fishing industry AU Anokhina, A.. AU Zaitsev, V.. PY 2018 IS 2018 PB Astrakhan State Technical University