@misc{indiciaec37b3db02708,
  title = {Electrical character of collapse breccia pipes on the Coconino Plateau, northern Arizona},
  author = {V. J. Flanigan and Pamela Mohr and C. L. Tippens and R. Michael Senterfit},
  year = {1986},
  doi = {10.3133/ofr86521},
  url = {https://pubs.usgs.gov/publication/ofr86521},
  note = {Source identifier: ofr86521}
}