@misc{indiciae4eafacfa1e5e,
  title = {Geochemical data for Illinois Basin coal samples, 2015–2018},
  author = {Allan Kolker and Clint Scott and Liliana Lefticariu and Maria Mastalerz and Agnieszka Drobniak and Annie Scott},
  year = {2021},
  doi = {10.3133/ds1135},
  url = {https://pubs.usgs.gov/publication/ds1135},
  note = {Source identifier: ds1135}
}