@misc{indiciae1c518ba73002,
  title = {Letter: Whose cost/benefit?},
  author = {M A Baltzan},
  year = {1975},
  doi = {10.1016/s0140-6736(75)90829-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/52103/},
  note = {Source identifier: 52103}
}