Friedrich Heinrich Alexander von Humboldt. Line engraving by A. Krausse.
- Reference:
- 4382i
Licence: Public Domain Mark
Credit: Friedrich Heinrich Alexander von Humboldt. Line engraving by A. Krausse. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Friedrich Heinrich Alexander von Humboldt. Line engraving by A. Krausse. Wellcome Collection. Source: Wellcome Collection.