@misc{indiciaeba0a57dab5f3,
  title = {Complete Bouguer gravity anomaly map of the Roseau 1° x 2° quadrangle, Minnesota and Ontario},
  author = {Robert Horton and Val W. Chandler},
  year = {1988},
  doi = {10.3133/ofr88531},
  url = {https://pubs.usgs.gov/publication/ofr88531},
  note = {Source identifier: ofr88531}
}