@misc{indiciaedf2863817dcd,
  title = {Annual report of the USGS Mission, Kingdom of Saudi Arabia, for the third year of the fifth extension of the USGS-MPMR work agreement : fiscal year 1400/01, 1 Rajab 1400-30 Jumad Thani 1401 (15 May 1980-4 May 1981)},
  author = {U.S. Geological Survey Saudi Arabia Mission and Saudi Arabia. Mudīrīyah al-ʻĀmmah lil-Tharwah al-Maʻdinīyah},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70157385},
  note = {Source identifier: 70157385}
}