@misc{indiciaec44eae5ce63e,
  title = {Direct-current vertical electrical-resistivity soundings in the Lower Peninsula of Michigan},
  author = {D.B. Westjohn and P.J. Carter},
  year = {1989},
  doi = {10.3133/ofr89244},
  url = {https://pubs.usgs.gov/publication/ofr89244},
  note = {Source identifier: ofr89244}
}