@misc{indiciae3a5fd3cad55f,
  title = {The water immersion objective.},
  author = {G H NEEDHAM},
  year = {1961},
  doi = {10.1111/j.1365-2818.1961.tb05234.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/13728107/},
  note = {Source identifier: 13728107}
}