@misc{indiciae9ae176578d7e,
  title = {Helicopter support for the geologist},
  author = {W.E. Davies},
  year = {1954},
  doi = {10.1126/science.119.3098.697},
  url = {https://pubs.usgs.gov/publication/70010696},
  note = {Source identifier: 70010696}
}