@misc{indiciaefdb66fc3b2b3,
  title = {Bedrock geologic map of the Negaunee SW quadrangle, Marquette County, Michigan},
  author = {Lorin D. Clark and William F. Cannon and J. S. Klasner},
  year = {1975},
  doi = {10.3133/gq1226},
  url = {https://pubs.usgs.gov/publication/gq1226},
  note = {Source identifier: gq1226}
}