@misc{indiciaeb7e357ef9f12,
  title = {Estimates of county-level nitrogen and phosphorus from fertilizer and manure from 1950 through 2017 in the conterminous United States},
  author = {James A. Falcone},
  year = {2021},
  doi = {10.3133/ofr20201153},
  url = {https://pubs.usgs.gov/publication/ofr20201153},
  note = {Source identifier: ofr20201153}
}