@misc{indiciaeb55e3f7a9039,
  title = {Willamette Valley Ecoregion: Chapter 3 in Status and trends of land change in the Western United States--1973 to 2000},
  author = {Tamara S. Wilson and Daniel G. Sorenson},
  year = {2012},
  doi = {10.3133/pp1794a3},
  url = {https://pubs.usgs.gov/publication/pp1794A3},
  note = {Source identifier: pp1794A3}
}