@misc{indiciae7156e26246e1,
  title = {Gravity survey data of the International Falls CUSMAP area, International Falls, Minnesota, and Ontario, Canada},
  author = {Robert Horton},
  year = {1987},
  doi = {10.3133/ofr87327},
  url = {https://pubs.usgs.gov/publication/ofr87327},
  note = {Source identifier: ofr87327}
}