@misc{indiciae3ebf568088a8,
  title = {Problematica Silurica : Systême Silurien du centre de la Bohême — Illustration, Figs. 2-3, Page 15},
  year = {1908},
  url = {https://www.biodiversitylibrary.org/page/14880977},
  note = {Source identifier: page-14880977}
}