@misc{indiciaee2ea1aace2e1,
  title = {Contributions to economic geology (short papers and preliminary reports), 1921, Part II.--Mineral fuels},
  author = {David White and Marius R. Campbell},
  year = {1922},
  doi = {10.3133/b726},
  url = {https://pubs.usgs.gov/publication/b726},
  note = {Source identifier: b726}
}