@misc{indiciaeb2d6082daeef,
  title = {LSTRAT; a standard output routine for USTRAT file stratigraphic data in the National Coal Resources Data System (NCRDS)},
  author = {Dorsey Blake},
  year = {1982},
  doi = {10.3133/ofr82939},
  url = {https://pubs.usgs.gov/publication/ofr82939},
  note = {Source identifier: ofr82939}
}