00848nam0-22002891i-450-99000050593040332120080204115426.0000050593FED01000050593(Aleph)000050593FED0100005059320020821d1972----km-y0itay50------baenga-------001yyTerrestrial propagation of long electromagnetic wavesJanis GalejsOxfordPergamon Pressc1972362 p.ill.25 cmInternational series of monographs in electromagnetic waves16Propagazione onde radio ionosferiche621.3841'1Galejs,JanisITUNINARICAUNIMARCBK99000050593040332110 E III 1387390DINELDINELUNINA