@misc{indiciaec72cc4139108,
  title = {Water levels and artesian pressures in observation wells in the United States in 1937},
  author = {O. E. Meinzer and L.K. Wenzel},
  year = {1938},
  doi = {10.3133/wsp840},
  url = {https://pubs.usgs.gov/publication/wsp840},
  note = {Source identifier: wsp840}
}