@misc{indiciaeb04dd6f8540d,
  title = {Echinoderma (part II) and Enteropneusta : larvae of Echinoderma and Enteropneusta — Illustration, Pl. II},
  year = {1920},
  url = {https://www.biodiversitylibrary.org/page/12333277},
  note = {Source identifier: page-12333277}
}