@misc{indiciaed7e8b247d51b,
  title = {Symbols and definitions from soil mechanics and soil physics},
  author = {A.I. Johnson},
  year = {1963},
  doi = {10.3133/ofr6366},
  url = {https://pubs.usgs.gov/publication/ofr6366},
  note = {Source identifier: ofr6366}
}