@misc{indiciaeb09891bf699e,
  title = {The smokeless combustion of coal in boiler plants, with a chapter on central heating plants},
  author = {Dwight T. Randall and H.T. Weeks},
  year = {1909},
  doi = {10.3133/b373},
  url = {https://pubs.usgs.gov/publication/b373},
  note = {Source identifier: b373}
}