@misc{indiciae48ec8f00a22d,
  title = {Map and table showing distribution of known coal deposits in central Alaska},
  author = {Judith S. Gassaway and Beth S. Abramson},
  year = {1978},
  doi = {10.3133/ofr77168g},
  url = {https://pubs.usgs.gov/publication/ofr77168G},
  note = {Source identifier: ofr77168G}
}