@misc{indiciae01541024d75d,
  title = {The use of process models to inform and improve statistical models of nitrate occurrence, Great Miami River Basin, southwestern Ohio},
  author = {Donald A. Walter and J. Jeffrey Starn},
  year = {2013},
  doi = {10.3133/sir20125001},
  url = {https://pubs.usgs.gov/publication/sir20125001},
  note = {Source identifier: sir20125001}
}