00743naa#a2200181#i#450# EN\\bibl\1883 20260311062320.3 2222-7962 20140421b2014####ek#y0engy0150####ca RUS RU Heavy metal pollution of ecosystem components in the area of copper-nickel sulfide ore occurrences "Elanskoe" and "Elkinskoe" of Novokhopersk district, Voronezh region Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 10 с. Journal article local Kharchenko Nikolay Nikolaevich Yaitskikh Marina anni.editorum.ru