@misc{indiciae5e7fd248baaa,
  title = {Coal reserves of the Healy Creek and Lignite Creek coal basins, Nenana coal field, Alaska},
  author = {Clyde Wahrhaftig},
  year = {1973},
  doi = {10.3133/ofr73355},
  url = {https://pubs.usgs.gov/publication/ofr73355},
  note = {Source identifier: ofr73355}
}