@misc{indiciaea91861c5ed8c,
  title = {Map showing construction materials and nonmetallic-mineral resources of Wyoming},
  author = {Stephen E. Clabaugh and E.C. Fischer and E.L. Fox and W. R. Griffitts and David M. Larrabee},
  year = {1946},
  doi = {10.3133/mb9},
  url = {https://pubs.usgs.gov/publication/mb9},
  note = {Source identifier: mb9}
}