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1by Schmidt, Wolfgang; Malzahn, Heinz , 1980In collection: Monographienreihe Nutzbare Gesteine und IndustriemineraleBook
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9by Schneider, Horst , Published in Montan- und Industriegeschichte (2006)In collection: Montan- und IndustriegeschichteBook Component Part
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16by Leake, R. C. , 1995In collection: British Geological Survey: Technical reportIn collection: Mineral reconnaissance programme reportBook
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