@misc{indiciae97265c58db33,
  title = {Nonpoint-source discharges in Pequea Creek Basin, Pennsylvania, 1977},
  author = {Janice R. Ward and David A. Eckhardt},
  year = {1979},
  doi = {10.3133/wri7988},
  url = {https://pubs.usgs.gov/publication/wri7988},
  note = {Source identifier: wri7988}
}