@misc{indiciae89334f2953cc,
  title = {Tangible graphs for the blind.},
  author = {S J Lederman and J I Campbell},
  year = {1982},
  doi = {10.1177/001872088202400109},
  url = {https://pubmed.ncbi.nlm.nih.gov/7068153/},
  note = {Source identifier: 7068153}
}