@misc{indiciae7716a3624412,
  title = {MAPPING NORMS.},
  author = {G T Whyburn},
  year = {1959},
  doi = {10.1073/pnas.45.9.1431},
  url = {https://pubmed.ncbi.nlm.nih.gov/16590523/},
  note = {Source identifier: 16590523}
}