@misc{indiciae7b84556ba4a6,
  title = {Profitable poultry. : [Supplementary material in Charles Darwin's copy] / Profitable poultry — Illustration, Page 21},
  year = {1854},
  url = {https://www.biodiversitylibrary.org/page/33902254},
  note = {Source identifier: page-33902254}
}