@misc{indiciae7781d6d80b46,
  title = {Yearly variations in runoff for the conterminous United States, 1931-1960},
  author = {Mark W. Busby},
  year = {1964},
  doi = {10.3133/wsp1669s},
  url = {https://pubs.usgs.gov/publication/wsp1669S},
  note = {Source identifier: wsp1669S}
}