@misc{1191326,
  author = {R S Kirby and F M Capps and R N Jones},
  title = {Circular of the Bureau of Standards no. 546::effective radio ground-conductivity measurements in the United States},
  year = {1954},
  month = {1954-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.CIRC.546},
  language = {en},
}