TY JOUR TI BIOLOGICAL CHARACTERISTIC OF THE REPRODUCTIVE GUILD OF ACIPENSER RUTHENUS (LINNAEUS, 1758) IN THE SEVERNAYA DVINA RIVER KW sterlet KW Severnaya Dvina river KW spawning KW Age and length structure KW growth KW maturation JO Transactions of Papanin Institute for Biology of Inland Waters RAS AU Studenov, I.I. AU Bykov, A.D. AU Chupov, D.V. PY 2022 IS 0 PB Papanin Institute for Biology of Inland Waters Russian Academy of Sciences