@misc{indiciae25453040ee9c,
  title = {Our present challenges.},
  author = {W A Jeffers},
  year = {1966},
  doi = {10.1353/pbm.1966.0018},
  url = {https://pubmed.ncbi.nlm.nih.gov/5907097/},
  note = {Source identifier: 5907097}
}