@misc{indiciae0dfabdd8035c,
  title = {Time-of-travel study in the Presumpscot River basin, Maine},
  author = {Gene W. Parker},
  year = {1980},
  doi = {10.3133/ofr80570},
  url = {https://pubs.usgs.gov/publication/ofr80570},
  note = {Source identifier: ofr80570}
}