@misc{indiciaec11f5ee8caae,
  title = {Geologic map of the Orchard 7.5' quadrangle, Morgan County, Colorado},
  author = {Margaret E. Berry and Janet L. Slate and Paul R. Hanson and Theodore R. Brandt},
  year = {2015},
  doi = {10.3133/sim3331},
  url = {https://pubs.usgs.gov/publication/sim3331},
  note = {Source identifier: sim3331}
}