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Vydania od Guido Küstel

Cover for Guido Küstel · Treatise on Concentration of All Kinds of Ores (Book) (2023)

Treatise on Concentration of All... (2023)

Cover for Guido Kustel · Roasting of Gold and Silver Ores, and the Extraction of Their Respective Metals Without Quicksilver (1870) (Hardcover Book) (2008)

Roasting of Gold and Silver Ores... (2008)