00460nam a2200157Ia 4500003000900000008004100009040001600050080001700066100001800083245009000101250001200191260004400203300001400247650001900261650002200280IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.396bWIT  aWitts, Alfred 0aRadio Upkeep and RepairscAlfred Witts                                                 a7th ed.  aLondonbSir Isaac Pitman and Sonsc1952  aiv, 220p.  aNASA Thesaurus  aRadio Engineering