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Buschmann, Johann Carl Ed. (1805-1880)(1)
Encke, Johann Franz (1791-1865)(1)
Humboldt, Alexander von (1769-1859) (1)
Buschmann, Johann Carl Ed. (1805-1880)(1)
Encke, Johann Franz (1791-1865)(1)
Humboldt, Alexander von (1769-1859) (1)