00627nam0-22002411i-450-99000398082040332120031120113758.0000398082FED01000398082(Aleph)000398082FED0100039808220030922d--------km-y0itay50------baengPhotoelectric CellsSommer A.LondonMethuen & co1946Sommer,A.380364ITUNINARICAUNIMARCBK99000398082040332100 P13172392DETECDETECPhotoelectric Cells473704UNINA