@misc{indiciae3a1c61f42aeb,
  title = {Madrean Archipelago Ecoregion: Chapter 28 in Status and trends of land change in the Western United States--1973 to 2000},
  author = {Jana Ruhlman and Leila Gass and Barry Middleton},
  year = {2012},
  doi = {10.3133/pp1794a28},
  url = {https://pubs.usgs.gov/publication/pp1794A28},
  note = {Source identifier: pp1794A28}
}