@misc{indiciae3e2b6d5d9ab8,
  title = {Gravity base ties and gravimeter calibration line in western Saudi Arabia},
  author = {M. E. Gettings},
  year = {1985},
  doi = {10.3133/ofr8526},
  url = {https://pubs.usgs.gov/publication/ofr8526},
  note = {Source identifier: ofr8526}
}