@misc{indiciaec09ca85569cc,
  title = {Seismicity map of the State of Maine},
  author = {Carl W. Stover and B. Glen Reagor and Barbara B. Poppe},
  year = {1977},
  doi = {10.3133/mf845},
  url = {https://pubs.usgs.gov/publication/mf845},
  note = {Source identifier: mf845}
}