@misc{indiciaecc949618c136,
  title = {Structure contours of base of upper Arapahoe aquifer in "Structure, outcrop, and subcrop of the bedrock aquifers along the western margin of the Denver Basin, Colorado." Hydrologic Atlas 742},
  author = {Sharon Rafferty},
  year = {1998},
  doi = {10.3133/70046227},
  url = {https://pubs.usgs.gov/publication/70046227},
  note = {Source identifier: 70046227}
}