@misc{indiciae121a060cc7fe,
  title = {Map showing total number of irrigation wells in Nebraska as of January 1, 1955},
  author = {Gerald R. Svoboda},
  year = {1955},
  doi = {10.3133/ofr55179},
  url = {https://pubs.usgs.gov/publication/ofr55179},
  note = {Source identifier: ofr55179}
}