00708nam0-22002651i-450-99000794414040332120070312135948.0000794414FED01000794414(Aleph)000794414FED0100079441420041108d1949----km-y0itay50------baenga---a---001yyPermanent magnetsF.G. SpreadburyLondraPitman1949viii, 280 p.22 cmSpreadbury,Frank George299605ITUNINARICAUNIMARCBK99000794414040332114 M-055 /GALLO93DINMPDINMPPermanent magnets748952UNINA