@misc{indiciaec18717db60e6,
  title = {Midcontinent microcosm: Geology of the Atkins lake - Marengo falls area (Field trip 2)},
  author = {Marcia Bjornerud and William F. Cannon},
  year = {2011},
  url = {https://pubs.usgs.gov/publication/70193198},
  note = {Source identifier: 70193198}
}