@misc{indiciaeb6d677ec28b4,
  title = {What is a population?},
  author = {W.R. Munns and W. N. Beyer and W.G. Landis and C. Menzie},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/5224191},
  note = {Source identifier: 5224191}
}