@misc{indiciaec2075dc862fb,
  title = {Petroleum exploration plays and resource estimates, 1989, onshore United States; Region 1, Alaska; Region 2, Pacific Coast},
  year = {1993},
  doi = {10.3133/b2034a},
  url = {https://pubs.usgs.gov/publication/b2034A},
  note = {Source identifier: b2034A}
}