@misc{indiciae16b2c2ab7ac8,
  title = {A tier system approach to mutagen testing.},
  author = {W G Flamm},
  year = {1974},
  doi = {10.1016/s0027-5107(74)80030-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4604048/},
  note = {Source identifier: 4604048}
}