@misc{indiciae9b3b0ee56a72,
  title = {Preliminary geologic map of the Lansford quadrangle, North Dakota},
  author = {Richard W. Lemke and Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey and Fred S. Jensen},
  year = {1947},
  doi = {10.3133/ofr479},
  url = {https://pubs.usgs.gov/publication/ofr479},
  note = {Source identifier: ofr479}
}