@misc{indiciae378b268f0d9a,
  title = {The elements of structural botany with special reference to the study of Canadian plants, to which is added a selection of examination papers — Illustration, BHL page 31921920},
  year = {1889},
  url = {https://www.biodiversitylibrary.org/page/31921920},
  note = {Source identifier: page-31921920}
}