Alexander von Humboldt /
Kellner, L.
Alexander von Humboldt / [by] L. Kellner. - London ; New York : Oxford University Press, 1963. - 246 p. [1]l. portr. : ill.
Includes bibliography.
Humboldt, Alexander von, 1769-1859.
Alexander von Humboldt / [by] L. Kellner. - London ; New York : Oxford University Press, 1963. - 246 p. [1]l. portr. : ill.
Includes bibliography.
Humboldt, Alexander von, 1769-1859.