00478nam a2200181Ia 4500003000900000008004100009040001600050080001900066100001700085245006700102250001200169260004200181300000900223650001100232650001900243650001900262700001500281IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.385.2bHAA  aHanntjes, J. 0aClassification of electron tubesc J. Hanntjes and H. Cartar    a2nd ed.  aNew York, The Macmillan Companyc1962  a95p.  aDiodes  aElectron Tubes  aNASA Thesaurus  aCartar, H.