@misc{indiciaef160180714be,
  title = {Erosional-depositional province map of the Willamette River basin, Oregon},
  author = {J. D. Meyers and D. A. Rickert and W. G. Hines and S. D. Vickers},
  year = {1979},
  doi = {10.3133/i921b},
  url = {https://pubs.usgs.gov/publication/i921B},
  note = {Source identifier: i921B}
}