@misc{indiciae8ca359efaa60,
  title = {Der Taubenfreund. : [Supplementary material in Charles Darwin's copy] / Der Taubenfreund — Illustration, Page 28},
  year = {1850},
  url = {https://www.biodiversitylibrary.org/page/33839607},
  note = {Source identifier: page-33839607}
}