@misc{indiciaed221b3f1f6b3,
  title = {Biomes of western North America at 18,000, 6000 and 0 14C yr BP reconstructed from pollen and packrat midden data},
  author = {R.S. Thompson and K. H. Anderson},
  year = {2001},
  doi = {10.1046/j.1365-2699.2000.00427.x},
  url = {https://pubs.usgs.gov/publication/70022151},
  note = {Source identifier: 70022151}
}