@misc{indiciaeb68518f79b4b,
  title = {Mollusks, Echnioderms, Coelenterates, etc. Part E Rotatoria — Illustration, BHL page 41715991},
  year = {1921},
  url = {https://www.biodiversitylibrary.org/page/41715991},
  note = {Source identifier: page-41715991}
}