@misc{indiciae646280c46201,
  title = {The precision binocular loupe.},
  author = {D M Siegel},
  year = {1989},
  doi = {10.1111/j.1524-4725.1989.tb03244.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2925984/},
  note = {Source identifier: 2925984}
}