@misc{indiciaecfcf9db86a29,
  title = {Ground-water resources of the Lambayeque Valley, Department of Lambayeque, northern Peru},
  author = {Stuart L. Schoff and M. Juan Luis Sayan},
  year = {1969},
  doi = {10.3133/wsp1663f},
  url = {https://pubs.usgs.gov/publication/wsp1663F},
  note = {Source identifier: wsp1663F}
}