@misc{indiciae3719d4a5e9d7,
  title = {Limnological studies of the major streams in Chester County, Pennsylvania},
  author = {Bruce W. Lium},
  year = {1977},
  doi = {10.3133/ofr77462},
  url = {https://pubs.usgs.gov/publication/ofr77462},
  note = {Source identifier: ofr77462}
}