@misc{indiciae8962c29c5cc7,
  title = {Diverse gas plays lurk in gas resource pyramid},
  author = {Vello A. Kuuskraa and James W. Schmoker and Thaddeus S. Dyman},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/70020799},
  note = {Source identifier: 70020799}
}