@misc{indiciae86aea901571f,
  title = {A new obstetrical instrument.},
  author = {L F ZACHARIAS and K ZIESMANN},
  year = {1959},
  doi = {10.1016/0002-9378(59)90252-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/13617344/},
  note = {Source identifier: 13617344}
}