@misc{indiciaee0ac8c47a5f0,
  title = {Field determination of vertical permeability to air in the unsaturated zone},
  author = {Edwin P. Weeks},
  year = {1977},
  doi = {10.3133/ofr77346},
  url = {https://pubs.usgs.gov/publication/ofr77346},
  note = {Source identifier: ofr77346}
}