@misc{indiciaeb7cf87c421ce,
  title = {An elementary text-book of the microscope; including a description of the methods of preparing and mounting objects, etc — Illustration, BHL page 23819440},
  year = {1864},
  url = {https://www.biodiversitylibrary.org/page/23819440},
  note = {Source identifier: page-23819440}
}