@misc{indiciae8a1d4b4acaf9,
  title = {George Engelmann : botanical notebook 46 : Coniferae (Pinaceae) — Illustration, [No.] 10522 verso},
  year = {1871},
  url = {https://www.biodiversitylibrary.org/page/55928463},
  note = {Source identifier: page-55928463}
}