@misc{indiciaeff84eaf552a4,
  title = {Expanding with paperbacks.},
  author = {R G Thomson and J V Toohey},
  year = {1967},
  doi = {10.1111/j.1746-1561.1967.tb03000.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5182539/},
  note = {Source identifier: 5182539}
}