@misc{indiciae0b2a225cafba,
  title = {Coal quality controls of the Danville coal in Indiana (Illinois Basin, Central USA)},
  author = {Maria Mastalerz and P.L. Padgett},
  year = {2002},
  doi = {10.1016/s0166-5162(01)00060-x},
  url = {https://pubs.usgs.gov/publication/70025118},
  note = {Source identifier: 70025118}
}