@misc{indiciaec3ca9c07683e,
  title = {Trends in surface-water quality during implementation of best-management practices in Mill Creek and Muddy Run Basins, Lancaster County, Pennsylvania},
  author = {Edward H. Koerkle},
  year = {2000},
  doi = {10.3133/fs16899},
  url = {https://pubs.usgs.gov/publication/fs16899},
  note = {Source identifier: fs16899}
}