@article{943295,
      note = {Relief shown by shading.},
      author = {Downs, Drew T.,},
      url = {http://library.usi.edu/record/943295},
      title = {Geologic map of the northern Harrat Rahat volcanic field,  Kingdom of Saudi Arabia /},
      recid = {943295},
      pages = {1 online resource (3 maps) :},
}