@misc{indiciae3d25aa1b01f4,
  title = {Maps showing locations of holes drilled in 1952 to 1954 by U.S. Geological Survey, Gypsum Valley district, Montrose and San Miguel Counties, Colorado},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1969},
  doi = {10.3133/ofr69300},
  url = {https://pubs.usgs.gov/publication/ofr69300},
  note = {Source identifier: ofr69300}
}