@misc{indiciaef447a21ef5df,
  title = {Appendix F—Ground‐water studies in Central America},
  author = {A.N. Sayre},
  year = {2014},
  doi = {10.1029/tr025i005p00724-2},
  url = {https://pubs.usgs.gov/publication/70215206},
  note = {Source identifier: 70215206}
}