@misc{indiciae95ad4a7e20b0,
  title = {Trophic conditions in Lake Winnisquam, New Hampshire},
  author = {Leonard R. Frost},
  year = {1977},
  doi = {10.3133/wri77137},
  url = {https://pubs.usgs.gov/publication/wri77137},
  note = {Source identifier: wri77137}
}