@misc{indiciae299af5650515,
  title = {Use of slide rule in solving ground-water problems involving application of the nonequilibrium formula},
  author = {C.V. Theis and R. H. Brown},
  year = {1951},
  doi = {10.3133/ofr51152},
  url = {https://pubs.usgs.gov/publication/ofr51152},
  note = {Source identifier: ofr51152}
}