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    Source: 1. Uhlí-Rudy-Geologický průzkum 1. 0016-7720041-58120483-5093 1. Roč. 1, č. 2(1994), s. 57-61 a 62
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  2. 2
    by Opoldus, Jozef
    Source: 1. Cigliansky baník 1. , č. 10(1994), s. 1 a 3
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