@misc{indiciae15d2aac874e2,
  title = {Geology and ground-water resources of the upper Niobrara River basin, Nebraska and Wyoming, with a section on chemical quality of the ground water},
  author = {Edward Bradley and F. Rainwater},
  year = {1956},
  doi = {10.3133/wsp1368},
  url = {https://pubs.usgs.gov/publication/wsp1368},
  note = {Source identifier: wsp1368}
}