@misc{1172486, author = {J Ralph Johler and Leslie A Berry}, title = {A Complete mode sum for LF, VLF, ELF terrestrial radio wave fields:}, year = {1964}, month = {1964-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.MONO.78}, language = {en}, }