@misc{indiciaec9bdcd5ef6eb,
  title = {The guinea-pig placenta.},
  author = {P Kaufmann and M Davidoff},
  year = {1977},
  doi = {10.1007/978-3-642-66618-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/331890/},
  note = {Source identifier: 331890}
}