@misc{indiciaee21a8679aee7,
  title = {Mineral deposits in western Saudi Arabia; a preliminary report},
  author = {Ralph Jackson Roberts and William R. Greenwood and Ronald G. Worl and F. C. W. Dodge and Thor H. Kiilsgaard},
  year = {1975},
  doi = {10.3133/ofr75654},
  url = {https://pubs.usgs.gov/publication/ofr75654},
  note = {Source identifier: ofr75654}
}