00720nam0-22002651i-450-99000788029040332120040507073754.0000788029FED01000788029(Aleph)000788029FED0100078802920040507d--------km-y0itay50------baengUltra-violet and infra-red engineeringSummer W.1LondonSir Isaac Pitman & sons1962fisicaSummer,Walter13140ITUNINARICAUNIMARCBK99000788029040332100 L16592946DETECDETECUltra-violet and infra-red engineering669014UNINA