@misc{indiciaea0a1651bc372,
  title = {Iowa magnetic and gravity maps and data: A web site for distribution of data},
  author = {Robert P. Kucks and Patricia L. Hill},
  year = {2005},
  doi = {10.3133/ds135},
  url = {https://pubs.usgs.gov/publication/ds135},
  note = {Source identifier: ds135}
}