@misc{indiciae4971e8c16c85,
  title = {Hydrogeochemical survey of groundwater for selected areas in the Arabian Shield and in cover rocks, Kingdom of Saudi Arabia},
  author = {John B. McHugh and W. Roger Miller},
  year = {1989},
  doi = {10.3133/ofr89334},
  url = {https://pubs.usgs.gov/publication/ofr89334},
  note = {Source identifier: ofr89334}
}