@misc{indiciaea88510903213,
  title = {The foundation for Teaching Aids at Low Cost.},
  author = {R J Lunnon},
  year = {1979},
  doi = {10.3109/17453057909154240},
  url = {https://pubmed.ncbi.nlm.nih.gov/94921/},
  note = {Source identifier: 94921}
}