@article{Markschies2021,
  author    = {Christoph Markschies},
  title     = {Geleitwort},
  journal   = {HiN : Alexander von Humboldt im Netz = Christian Gottfried Ehrenberg},
  series    = {Lebensbilder eines Naturforschers},
  volume    = {XXII},
  number    = {42},
  pages     = {5 -- 13},
  doi       = {https://doi.org/10.18443/325},
  year      = {2021},
}