@misc{indiciae0e694ce56965,
  title = {Preliminary compilation of descriptive geoenvironmental mineral deposit models},
  author = {Edward A. du Bray},
  year = {1995},
  doi = {10.3133/ofr95831},
  url = {https://pubs.usgs.gov/publication/ofr95831},
  note = {Source identifier: ofr95831}
}