@misc{indiciae4014ceeb173e,
  title = {Direct black 38, direct blue 6, direct brown 95, benzidine derived dyes.},
  author = {A W Thomas and M F Boeniger and M G Weber and H P Stein and A C Upton and J D Millar},
  year = {1978},
  url = {https://pubmed.ncbi.nlm.nih.gov/581253/},
  note = {Source identifier: 581253}
}