@misc{indiciae94435b57e799,
  title = {Digital data in support of studies and assessments of coal and petroleum resources in the Appalachian basin},
  author = {Michael H. Trippi and Scott A. Kinney and Gregory L. Gunther and Robert T. Ryder and Leslie F. Ruppert},
  year = {2014},
  doi = {10.3133/pp1708i.1},
  url = {https://pubs.usgs.gov/publication/pp1708I.1},
  note = {Source identifier: pp1708I.1}
}