@misc{indiciaeae078e47d05a,
  title = {George Engelmann : botanical notebook 47 : Coniferae (Pinaceae) — Illustration, [No.] 10725},
  year = {1863},
  url = {https://www.biodiversitylibrary.org/page/55907820},
  note = {Source identifier: page-55907820}
}