@misc{indiciae448fd670eb3a,
  title = {George Engelmann : botanical notebook 7 : Echinocactus, Echinopsis, and Cereus — Illustration, [No.] 1562 [2] verso},
  url = {https://www.biodiversitylibrary.org/page/54368644},
  note = {Source identifier: page-54368644}
}