@misc{indiciaef0b7b5ede1d8,
  title = {Groundwater in the San Luis Valley, Colorado},
  author = {Thomas William Robinson and Herbert A. Wait},
  year = {1937},
  doi = {10.3133/2608},
  url = {https://pubs.usgs.gov/publication/2608},
  note = {Source identifier: 2608}
}