@misc{indiciaeeb9e2b261c20,
  title = {Helicopter mobilization of oil and gas drilling operations in mountainous areas of western Wyoming},
  author = {Robert G. Rodriguez and John Luchetta},
  year = {1981},
  doi = {10.3133/ofr81860},
  url = {https://pubs.usgs.gov/publication/ofr81860},
  note = {Source identifier: ofr81860}
}