@misc{indiciae87f6c3fc4f66,
  title = {Letter: Reciprocity.},
  author = {R X Morrell},
  year = {1976},
  doi = {10.14219/jada.archive.1976.0306},
  url = {https://pubmed.ncbi.nlm.nih.gov/1060687/},
  note = {Source identifier: 1060687}
}