@misc{indiciaee7e5a1316b18,
  title = {A simple device for measuring differences in hydraulic head between surface water and shallow ground water},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {2000},
  doi = {10.3133/fs07700},
  url = {https://pubs.usgs.gov/publication/fs07700},
  note = {Source identifier: fs07700}
}