@misc{indiciae793f2d9c8349,
  title = {Development and Application of Regression Models for Estimating Nutrient Concentrations in Streams of the Conterminous United States, 1992-2001},
  author = {Norman E. Spahr and David K. Mueller and David M. Wolock and Kerie J. Hitt and JoAnn M. Gronberg},
  year = {2010},
  doi = {10.3133/sir20095199},
  url = {https://pubs.usgs.gov/publication/sir20095199},
  note = {Source identifier: sir20095199}
}