@misc{indiciaec2cde319858c,
  title = {Digital aeromagnetic anomaly data from north-east Nicaragua departamentos Jinotega and Zelaya Nicaragua},
  author = {H. A. Pierce},
  year = {1994},
  doi = {10.3133/ofr94280},
  url = {https://pubs.usgs.gov/publication/ofr94280},
  note = {Source identifier: ofr94280}
}