@misc{indiciae74cf556a2dc9,
  title = {Contributions to economic geology (short papers and preliminary reports) 1920.},
  author = {F. L. Ransome and Hoyt Stoddard Gale and Ernest Francis Burchard},
  year = {1921},
  doi = {10.3133/b715},
  url = {https://pubs.usgs.gov/publication/b715},
  note = {Source identifier: b715}
}