00722naa#a2200205#i#450# EN\\bibl\55672 20240714175711.7 2073-5529 20221214b2022####ek#y0engy0150####ca RU Biogeochemical monitoring of composition of chemical elements in Caspian Sea Journal article Astrakhan Astrakhan State Technical University 2022 6 с. Journal article local Организм и среда обитания. 574.2 Nevalennyy Aleksandr Nikolaevich Ershova Tatiyana Sergeevna Zaitsev Vyacheslav Fedorovich Chaplygin Vladimir Aleksandrovich vestnik.astu.org