AA model radio refractivity atmosphereA model radio refractivity atmospherede B. R. Bean, G. D. Thayer, United States. National Bureau of Standards, Boulder Laboratories (U.S.)MateriasIonospheric radio wave propagationRadio meteorologyAtmosphereMathematical modelsRadioReceivers and receptionRefractionObservations
CClimatic charts and data of the radio refractive index for tClimatic charts and data of the radio refractive index for the United States and the world
CClimatic Charts of the Surface Refractivity for Germany; NBSClimatic Charts of the Surface Refractivity for Germany; NBS Report 5588