@misc{indiciaed71455dff644,
  title = {The occurrence and uses of peat in the United States},
  author = {Edgar Kirke Soper and Clarence C. Osbon},
  year = {1922},
  doi = {10.3133/b728},
  url = {https://pubs.usgs.gov/publication/b728},
  note = {Source identifier: b728}
}