Titlebook: Social Stratification in Central Europe; Long-term Developmen Ji?í Ve?erník Book 2022 The Author(s), under exclusive license to Springer Na

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icularly widely known were ore minerals such as pyrolusite, that was described for the first time by Plinium as the variety of the iron magnetic oxide (magnetic iron ore or Lapis magnes). The reputation of pyrolusite can be associated with that the fact that remarkably it removes the green tint, imp