@misc{indiciae3a7656c85b9f,
  title = {George Engelmann : botanical notebook 48 : Coniferae (Pinaceae) — Illustration, [No.] 10931},
  year = {1874},
  url = {https://www.biodiversitylibrary.org/page/55906791},
  note = {Source identifier: page-55906791}
}