@misc{indiciaeb304f7c8d9cc,
  title = {Summary of hydrogeologic conditions by county for the state of Michigan},
  author = {Beth A. Apple and Howard W. Reeves},
  year = {2007},
  doi = {10.3133/ofr20071236},
  url = {https://pubs.usgs.gov/publication/ofr20071236},
  note = {Source identifier: ofr20071236}
}