@misc{indiciaec139b8f412be,
  title = {Text-book of human physiology, including histology and microscopical anatomy, with especial reference to the practice of medicine — Illustration, Page 681},
  year = {1904},
  url = {https://www.biodiversitylibrary.org/page/21020012},
  note = {Source identifier: page-21020012}
}