00783nam0-2200289---450-99000974797040332120130624132635.0000974797FED01000974797(Aleph)000974797FED0100097479720130620d1951----km-y0itay50------baengGBa-------001yy<<The >>earth's magnetismby Sydney ChapmanLondonMethuen & Co.New YorkJohn Wiley & Sons1951XI,127 p.ill.17 cmGeofisicaChapman,Sydney17700ITUNINARICAUNIMARCBK990009747970403321M4/70256DINGEDINGEEarth's magnetism833801UNINA