@misc{indiciae7f6afcd5c713,
  title = {George Engelmann : botanical notebook 48 : Coniferae (Pinaceae) — Illustration, [No.] 10874},
  year = {1881},
  url = {https://www.biodiversitylibrary.org/page/55906751},
  note = {Source identifier: page-55906751}
}