@misc{indiciae81414817ff76,
  title = {Visual detection of gas shows from coal core and cuttings using liquid leak detector},
  author = {C.E. Barker},
  year = {2006},
  doi = {10.2113/gscpgbull.54.3.292},
  url = {https://pubs.usgs.gov/publication/70028479},
  note = {Source identifier: 70028479}
}