A world atlas of atmospheric radio refractivity

"This atlas has been prepared for the radio engineer who wants an estimate of the behavior of the radio refractive index at any point on the earth."--Pref. "This atlas presents world maps and graphs of upper-air radio refractivity, mean monthly, extreme values of gradients of refractivity observed in the lowest layer of the atmosphere ..., and monthly mean tropopause heights."--Abstract. Published 1966.