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pro vyhledávání: '"Minela Sisic"'
Publikováno v:
Hemijska Industrija, Vol 71, Iss 4, Pp 319-327 (2017)
Lignite is brown coal, which in its composition contains humic acids. Humic acids are produced by coal combustion, which leads to the enrichment of coal humic acids. Lignite, from the opet pit mine Sikulje, lignite ore ?Kreka?, Bosnia and Herzegovina