@misc{indiciaeab4f19a9e486,
  title = {Resource-assessment perspectives for unconventional gas systems},
  author = {J. W. Schmoker},
  year = {2002},
  doi = {10.1306/61eedddc-173e-11d7-8645000102c1865d},
  url = {https://pubs.usgs.gov/publication/70024198},
  note = {Source identifier: 70024198}
}