@misc{indiciaee9a0ee2185a9,
  title = {George Engelmann : botanical notebook 7 : Echinocactus, Echinopsis, and Cereus — Illustration, [No.] 1753},
  url = {https://www.biodiversitylibrary.org/page/56147438},
  note = {Source identifier: page-56147438}
}