@misc{indiciae3c50b1b363db,
  title = {Geologic map of the Lake Helen quadrangle, Big Horn and Johnson Counties, Wyoming},
  author = {Fred Barker},
  year = {1982},
  doi = {10.3133/gq1563},
  url = {https://pubs.usgs.gov/publication/gq1563},
  note = {Source identifier: gq1563}
}