@misc{indiciae91d34f16183c,
  title = {Seepage study of streams crossing Chester Valley, Chester County, Pennsylvania},
  author = {L. J. McGreevy},
  year = {1973},
  doi = {10.3133/ofr741071},
  url = {https://pubs.usgs.gov/publication/ofr741071},
  note = {Source identifier: ofr741071}
}