00602naa#a2200181#i#450# EN\\bibl\41268 20241124163548.7 2073-5529 20201216b2020####ek#y0engy0150####ca RU ANNUAL VARIABILITY OF ACIPENSER RUTHENUS MARSIGLII PARASITES IN LOWER RICHES OF IRTYSH RIVER Journal article Astrakhan Astrakhan State Technical University 2020 7 с. Journal article local Зоология. 59 Voropaeva Ekaterina Leonidovna Liberman Elizaveta L'vovna vestnik.astu.org