@misc{indiciaee60ea6988db0,
  title = {World resources of crude oil, natural gas, natural bitumen, and shale oil},
  author = {C.D. Masters and Emil D. Attanasi and William D. Dietzman and R. F. Meyer and R.W. Mitchell and D. H. Root},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/70200169},
  note = {Source identifier: 70200169}
}