@misc{indiciae0be9b667bc10,
  title = {Land use and land cover and associated maps for Duluth, Minnesota; Wisconsin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1984},
  doi = {10.3133/ofr80630},
  url = {https://pubs.usgs.gov/publication/ofr80630},
  note = {Source identifier: ofr80630}
}