@misc{indiciae54aa6fec66d8,
  title = {Aquatic microscopy for beginners; or, Common objects from the ponds and ditches — Illustration, BHL page 37978657},
  year = {1896},
  url = {https://www.biodiversitylibrary.org/page/37978657},
  note = {Source identifier: page-37978657}
}