@misc{indiciae19873267565a,
  title = {Descriptions and correlations of coal bed facies, Lower Freeport(?) coal bed, west-central Pennsylvania},
  author = {R.W. Stanton and B.S. Pierce and T.A. Moore and L.F. Ruppert},
  year = {1985},
  doi = {10.3133/ofr85393},
  url = {https://pubs.usgs.gov/publication/ofr85393},
  note = {Source identifier: ofr85393}
}