@misc{indiciae97dc54771708,
  title = {Estimate of underflow in the Niobrara River Basin across the Wyoming-Nebraska state line},
  author = {H. M. Babcock and Charles F. Keech},
  year = {1957},
  doi = {10.3133/ofr574},
  url = {https://pubs.usgs.gov/publication/ofr574},
  note = {Source identifier: ofr574}
}