00687naa#a2200193#i#450# EN\\bibl\38360 20220128075002.5 2073-5529 20200622b2020####ek#y0engy0150####ca RU Monitoring sanitary state of perch (Perca fluviatilis L.) in open and closed water bodies of Volga basin Journal article Astrakhan Astrakhan State Technical University 2020 8 с. Journal article local Биологические науки. 57 Stepanenko Elizaveta Aleksandrovna Kanieva Nuria Abdrakhimovna Grigoryeva Tatiana Nikolaevna vestnik.astu.org