@misc{indiciae8dc5fdb3054f,
  title = {The logging and sampling of hydraulic rotary-drilled test holes},
  author = {A.G. Fiedler},
  year = {1949},
  doi = {10.3133/ofr4968},
  url = {https://pubs.usgs.gov/publication/ofr4968},
  note = {Source identifier: ofr4968}
}