@misc{indiciaea67dfd25e70c,
  title = {Chemical character of surface water in Pennsylvania, 1949-1951},
  author = {N.H. Beamer},
  year = {1953},
  doi = {10.3133/ofr5319},
  url = {https://pubs.usgs.gov/publication/ofr5319},
  note = {Source identifier: ofr5319}
}