@misc{indiciaee199c51b3178,
  title = {An evaluation of water-quality monitoring in the Brandywine Creek basin, Pennsylvania, 1973-78},
  author = {J.J. Murphy and J.R. Ritter and A.E. Brown and J.P. Chiarella},
  year = {1982},
  doi = {10.3133/ofr811115},
  url = {https://pubs.usgs.gov/publication/ofr811115},
  note = {Source identifier: ofr811115}
}