@misc{indiciaee6e716b54318,
  title = {Geology and ground-water resources of northern Mercer County, Pennsylvania},
  author = {G. R. Schiner and G.E. Kimmel},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/70047436},
  note = {Source identifier: 70047436}
}