@misc{indiciae5164e076c24b,
  title = {Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of the total phosphorus by a Kjeldahl digestion method and an automated colorimetric finish that includes dialysis},
  author = {Charles J. Patton and Earl P. Truitt},
  year = {1992},
  doi = {10.3133/ofr92146},
  url = {https://pubs.usgs.gov/publication/ofr92146},
  note = {Source identifier: ofr92146}
}