@misc{1191291,
  author = {W Q Crichlow and R N Morton and W R Corliss},
  title = {Circular of the Bureau of Standards no. 557::worldwide radio noise levels expected in the frequency band 10 kilocycles to 100 megacycles},
  year = {1955},
  month = {1955-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.CIRC.557},
  language = {en},
}