@misc{indiciaed58d7d6782df,
  title = {Quaternary Geologic Map of the Des Moines 4 Degrees x 6 Degrees Quadrangle, United States},
  author = {Jerry A. Lineback and David M. Mickelson and James C. Knox and Joseph E. Goebel and Howard C. Hobbs and John W. Whitfield and Ronald A. Ward and John D. Boellstorff and James B. Swinehart and Vincent H. Dreeszen and Gerald Martin Richmond and David S. Fullerton and Ann Coe Christiansen},
  year = {1994},
  doi = {10.3133/i1420(nk15)},
  url = {https://pubs.usgs.gov/publication/i1420(NK15)},
  note = {Source identifier: i1420(NK15)}
}