@misc{indiciaed7f1d1329792,
  title = {Seismic refraction survey of Pleistocene drainage channels in the lower Great Miami River Valley, Ohio},
  author = {J. S. Watkins and A. M. Spieker},
  year = {1971},
  doi = {10.3133/pp605b},
  url = {https://pubs.usgs.gov/publication/pp605B},
  note = {Source identifier: pp605B}
}