@misc{indiciae397711801fd6,
  title = {An application of surface geophysical techniques to the study of watershed hydrology},
  author = {Ronald R. Shields and William E. Sopper},
  year = {2007},
  doi = {10.1111/j.1752-1688.1969.tb04900.x},
  url = {https://pubs.usgs.gov/publication/70224623},
  note = {Source identifier: 70224623}
}