@misc{1189116,
  author = {Doyle A Ellerbruch},
  title = {Electromagnetic attenuation properties of clay and gravel soils:},
  year = {1974},
  month = {1974-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.74-381},
  language = {en},
}