@misc{indiciae1e8db84b6417,
  title = {Letter: Acid-base diagrams.},
  author = {C van Ypersele and A Frans},
  year = {1974},
  doi = {10.1016/s0140-6736(74)92201-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4138255/},
  note = {Source identifier: 4138255}
}