@misc{indiciae1e7a322e043a,
  title = {On the physiology of digestion, respiration and excretion in echinoderms — Illustration, BHL page 37694384},
  year = {1922},
  url = {https://www.biodiversitylibrary.org/page/37694384},
  note = {Source identifier: page-37694384}
}