@misc{indiciaeea80ac1732b1,
  title = {Status of correlation of Quaternary stratigraphic units in the western conterminous United States},
  author = {P. W. Birkeland and D. R. Crandell and G.M. Richmond},
  year = {2017},
  doi = {10.1016/0033-5894(71)90042-1},
  url = {https://pubs.usgs.gov/publication/70010400},
  note = {Source identifier: 70010400}
}