00938nam a2200277 i 450099100132123970753620020507114419.0960521s1948 us ||| | eng b10204349-39ule_instLE00645821ExLDip.to Fisicaita621.3.2621.384132TK7872.V3Spangenberg, Karl R.2699Vacuum tubes /Karl R. SpangenbergNew York :McGraw-Hill Book Co. ; Tokyo : Kogakusha Company,1948xvii, 860 p. :ill. ;24 cm.Includes bibliographies.Vacuum-tubes.b1020434921-09-0627-06-02991001321239707536LE006 621.3.2 SPA12006000055307le006-E0.00-l- 00000.i1025241127-06-02Vacuum tubes192225UNISALENTOle00601-01-96ma -engus 0102593nas 2200781-- 450 99633609480331620240130213016.0(CKB)110978977558421(CONSER)sn-79003577-(EXLCZ)9911097897755842120740624b19741996 --- aengtxtrdacontentcrdamediacrrdacarrierData channels[Washington etc.][Phillips Pub.]1 online resourcePrint version: Data channels. 0093-7290 (DLC)sn 79003577 (OCoLC)928264 Data channelsEducationData processingPeriodicalsInformation storage and retrieval systemsPeriodicalsCommunicationOnline data processingCommunicationPeriodicalsElectronic Data ProcessingCommunicationOnline SystemsInformatiquePériodiquesCommunicationPériodiquesSystèmes directsPériodiquesÉducationInformatiquePériodiquesSystèmes d'informationPériodiquesInformatiqueCommunicationSystèmes en ligneOnline data processingfast(OCoLC)fst01045942Communicationfast(OCoLC)fst00869952EducationData processingfast(OCoLC)fst00902579Information storage and retrieval systemsfast(OCoLC)fst00972781PeriodicalPeriodicals.fastPeriodicals.lcgftEducationData processingInformation storage and retrieval systemsCommunication.Online data processing.CommunicationElectronic Data ProcessingCommunicationOnline SystemsInformatiquePériodiques.CommunicationPériodiques.Systèmes directsPériodiques.ÉducationInformatiqueSystèmes d'informationInformatique.Communication.Systèmes en ligne.Online data processing.Communication.EducationData processing.Information storage and retrieval systems.JOURNAL996336094803316exl_impl conversionData channels2415924UNISA