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natural factors
Chaya
1
Chulym
1
Ket
1
Middle Ob
1
Ob
1
Parabel
1
Tom
1
Vasyugan
1
Western Siberia
1
anthropogenous transformations
1
average values
1
biogenic substances
1
ecological consequences
1
economic activity
1
formation
1
golden age of fishery
1
high-priority fishery objects
1
hydrocarbons
1
hydrochemical drain
1
ions
1
microelements
1
nitrogen
1
organic substances
1
periods of fishery
1
the Black Sea
1
waters
1
Тym
1
Черное море
1
приоритетные объекты
1
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