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  1. 1
    by Ibrahim, I.A, Amer, A.M
    Source: 1. 6th Conference on environment and mineral processing, part I 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2002 1. 8024800713 1. S. 79-84
    Article
  2. 2
    by Heideker, Andrej
    Source: 1. Montanrevue : časopis o baníctve a bansko-historickom dedičstve 1. Roč. 10, č. 1 (2017), s. 21-22 1. 1337-9682
    Article
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