@misc{indiciae5852f80c4fc6,
  title = {Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets — Illustration, BHL page 38016932},
  year = {1911},
  url = {https://www.biodiversitylibrary.org/page/38016932},
  note = {Source identifier: page-38016932}
}