@misc{indiciaebff40de9d336,
  title = {Ground-water data for Michigan 1989},
  author = {G.C. Huffman and C.R. Whited},
  year = {1991},
  doi = {10.3133/ofr9155},
  url = {https://pubs.usgs.gov/publication/ofr9155},
  note = {Source identifier: ofr9155}
}