@misc{indiciaea5b8c92ecf16,
  title = {Three-dimensional finite-difference model of ground-water system underlying the Muskegon County wastewater disposal system, Michigan},
  author = {Michael G. McDonald and William B. Fleck},
  year = {1978},
  url = {https://pubs.usgs.gov/publication/70176608},
  note = {Source identifier: 70176608}
}