@misc{indiciae8494986d2cfa,
  title = {Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on quality of surface runoff and ground water at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90},
  author = {D. W. Hall and P. L. Lietman and E. J. Koerkle},
  year = {1997},
  doi = {10.3133/wri954143},
  url = {https://pubs.usgs.gov/publication/wri954143},
  note = {Source identifier: wri954143}
}