@misc{indiciae22e7f9b3683c,
  title = {Comparative placental morphology and function.},
  author = {F Beck},
  year = {1976},
  doi = {10.1289/ehp.76185},
  url = {https://pubmed.ncbi.nlm.nih.gov/829489/},
  note = {Source identifier: 829489}
}