@misc{indiciaecb0d3baa4890,
  title = {Computer program designed to draw a ternary diagram based on proportions of any three variables from oil-shale Fischer assay or saline-mineral data},
  author = {George Van Trump and Janet K. Pitman},
  year = {1975},
  doi = {10.3133/ofr75524},
  url = {https://pubs.usgs.gov/publication/ofr75524},
  note = {Source identifier: ofr75524}
}