@misc{indiciae1976fa7ba9ca,
  title = {Persistent cultural systems.},
  author = {E H Spicer},
  year = {1971},
  doi = {10.1126/science.174.4011.795},
  url = {https://pubmed.ncbi.nlm.nih.gov/5120518/},
  note = {Source identifier: 5120518}
}