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3by Einecke, Gustav; Köhler, W. , 1910
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4by Atanasov, G. , Published in Vorträge des 11. Berg- und Hüttenmännischen Tages (1960)Book Component Part
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51968In collection: Geology of iron deposits in Canada / by G. A. GrossIn collection: Economic geology reportBook
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12Book
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17by Blondel, FernandIn collection: Symposium sur les Gisements de Fer du MondeBook Conference Proceedings
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18by Stella, Augusto , Published in Bolletttino della Società Geologica Italiana (1934)Book Special Print
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