@misc{indiciaec0b8af3661f8,
  title = {George Engelmann : botanical notebook 9 : Echinocereus, Cereus, Eulychnia, Pilocereus — Illustration, [No.] 1982},
  url = {https://www.biodiversitylibrary.org/page/56210031},
  note = {Source identifier: page-56210031}
}