@misc{indiciae187cd9aeab41,
  title = {Summary of ground-water hydrological data in Michigan in 1968},
  author = {P.R. Giroux and G.C. Huffman},
  year = {1970},
  doi = {10.3133/ofr70135},
  url = {https://pubs.usgs.gov/publication/ofr70135},
  note = {Source identifier: ofr70135}
}