@misc{indiciae17d428c1c67a,
  title = {Water-resources investigations in Pennsylvania; programs and activities of the U.S. Geological Survey, 1990-91},
  author = {L.O. McLanahan},
  year = {1991},
  doi = {10.3133/ofr91214},
  url = {https://pubs.usgs.gov/publication/ofr91214},
  note = {Source identifier: ofr91214}
}