@misc{indiciaefbef4c2dd2e0,
  title = {Die Süsswasserfauna Deutschlands. Eine Exkursionsfauna — Illustration, Page 231},
  year = {1912},
  url = {https://www.biodiversitylibrary.org/page/12476030},
  note = {Source identifier: page-12476030}
}