@misc{indiciae8476fbbb35a6,
  title = {U.S. Geological Survey 2002 petroleum resource assessment of the National Petroleum Reserve in Alaska (NPRA): GIS play maps},
  author = {Christopher P. Garrity and David W. Houseknecht and Kenneth J. Bird},
  year = {2002},
  doi = {10.3133/ofr02439},
  url = {https://pubs.usgs.gov/publication/ofr02439},
  note = {Source identifier: ofr02439}
}