@misc{1167501,
  author = {B R Bean and A M Ozanich},
  title = {Climatic charts of the surface refractivity for Germany:},
  year = {1958},
  month = {1958-07-01 04:07:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.RPT.5588},
  language = {en},
}