@misc{indiciae4475f9208e34,
  title = {Microbial production of natural gas from coal and organic-rich shale},
  author = {William Orem},
  year = {2013},
  doi = {10.3133/fs20123109},
  url = {https://pubs.usgs.gov/publication/fs20123109},
  note = {Source identifier: fs20123109}
}