Antracit (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Antracit" in Czech language version.

refsWebsite

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eia.gov

MATVEJEV, K. Antracit (ugoľ), Boľšaja sovietskaja enciklopedia [online]. bse.sci-lib.com [cit. 2017-01-19]. Dostupné online. (rusky)

MIN 454: Underground Mining Methods handout; from course at the University of Alaska Fairbanks [online]. [cit. 2009-05-05]. Dostupné v archivu pořízeném dne 26 March 2009.
World Coal Association - The Coal Resource, [1]