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Humboldt, Alexander von (1769-1859) (4)
Bode, Johann Elert (1747-1826)(1)
Encke, Johann Franz (1791-1865)(1)
Humboldt, Alexander von (1769-1859) (4)
Bode, Johann Elert (1747-1826)(1)
Encke, Johann Franz (1791-1865)(1)