@misc{indiciae2cf33abc7624,
  title = {Preliminary appraisal of the ground-water resources in the vicinity of Lima, Peru},
  author = {S.L. Schoff and J.L. Sayan},
  year = {1956},
  doi = {10.3133/ofr56106},
  url = {https://pubs.usgs.gov/publication/ofr56106},
  note = {Source identifier: ofr56106}
}