@misc{indiciaeb6d5678d4953,
  title = {Extensive droughts in the conterminous United States during multiple centuries},
  author = {Gregory J. McCabe and David M. Wolock},
  year = {2022},
  doi = {10.1175/ei-d-21-0021.1},
  url = {https://pubs.usgs.gov/publication/70236142},
  note = {Source identifier: 70236142}
}