@misc{indiciae7bf62c8d9fdd,
  title = {Outline of equipment for hydrologic studies},
  author = {A.I. Johnson},
  year = {1964},
  doi = {10.3133/ofr6364},
  url = {https://pubs.usgs.gov/publication/ofr6364},
  note = {Source identifier: ofr6364}
}