@misc{indiciae7451cccab3e7,
  title = {Twelve tips on using double slide projection.},
  author = {R M Harden},
  year = {1991},
  doi = {10.3109/01421599109089904},
  url = {https://pubmed.ncbi.nlm.nih.gov/1725204/},
  note = {Source identifier: 1725204}
}