@misc{indiciae61203840fad2,
  title = {Preliminary results on the availability of ground water in the Imperial Valley area},
  author = {J. H. Robison},
  year = {1963},
  doi = {10.3133/ofr63116},
  url = {https://pubs.usgs.gov/publication/ofr63116},
  note = {Source identifier: ofr63116}
}