@misc{indiciae9a116d282958,
  title = {Geology of the Angostura Reservoir quadrangle, Fall River County, South Dakota},
  author = {Jon J. Connor},
  year = {1963},
  doi = {10.3133/b1063d},
  url = {https://pubs.usgs.gov/publication/b1063D},
  note = {Source identifier: b1063D}
}