00632nam0-22002411i-450-990001126570403321000112657FED01000112657(Aleph)000112657FED0100011265720000920d1950----km-y0itay50------baengCosmical Electrodynamicsdi Alfven.OxfordClarendon Press1950Alfvén,Hannes340284ITUNINARICAUNIMARCBK99000112657040332130-L-71416MA1MA1Cosmical electrodynamics43005UNINAING01