@misc{indiciae79ac18ffcbff,
  title = {Update: World Coal Quality Inventory -- Argentina},
  author = {William E. Brooks and Jason C. Willett},
  year = {2004},
  doi = {10.3133/ofr20041022},
  url = {https://pubs.usgs.gov/publication/ofr20041022},
  note = {Source identifier: ofr20041022}
}