Kirby, R.
, Capps, F.
and Jones, R.
(1954),
Circular of the Bureau of Standards no. 546::effective radio ground-conductivity measurements in the United States, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.CIRC.546
(Accessed October 9, 2024)