@misc{indiciaee5171f003b27,
  title = {Geology and hydrology of the deep bedrock aquifers in eastern Colorado},
  author = {S. G. Robson and E. R. Banta},
  year = {1987},
  doi = {10.3133/wri854240},
  url = {https://pubs.usgs.gov/publication/wri854240},
  note = {Source identifier: wri854240}
}