00923nam0-22003011i-450-99000048456040332120071123090100.0000048456FED01000048456(Aleph)000048456FED0100004845620020821d1953----km-y0itay50------baenga-------001yySoft magnetic materials for telecommunicationsa symposium held at the post office engineering research station in april 1952C. E. Richards, A. C. LynchLondonPergamon press1953346 p.ill.22 cmMateriali magneticiIngegneria delle telecomunicazioni621.382Richards,Colbert EricLynch,A. C.ITUNINARICAUNIMARCBK99000048456040332110 E II 233293DINELDINELUNINA