@misc{indiciae6fa50d99e70c,
  title = {Alaska coal geology, resources, and coalbed methane potential},
  author = {Romeo M. Flores and Gary D. Stricker and Scott A. Kinney},
  year = {2004},
  doi = {10.3133/ds77},
  url = {https://pubs.usgs.gov/publication/ds77},
  note = {Source identifier: ds77}
}