@misc{indiciae9fe173315ead,
  title = {Mineral resources of the Elkhorn Wilderness Study Area, Broadwater and Jefferson Counties, Montana},
  author = {William R. Greenwood and Steve Ludington and William R. Miller and William F. Hanna and Karen J. Wenrich and Vivian J. Suits and John B. McHugh},
  year = {1990},
  doi = {10.3133/b1805},
  url = {https://pubs.usgs.gov/publication/b1805},
  note = {Source identifier: b1805}
}