Source Information

Humboldt, Alexander von, Gesammelte Werke von Alexander von Humboldt: Kosmos: Entwurf einer physischen Weltbeschreibung, vol. 3-4, 1844

Digitized copy: Max Planck Institute for the History of Science
Digitized by: Max Planck Institute for the History of Science
Copyright: (images) Max Planck Institute for the History of Science
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