@misc{indiciaeb6b6a63c7453,
  title = {Method for assessment of toxicity or efficacy of mixtures of chemicals},
  author = {Leif L. Marking and Verdel K. Dawson},
  year = {1975},
  url = {https://pubs.usgs.gov/publication/ifc67},
  note = {Source identifier: ifc67}
}