00502nam a2200169Ia 4500003000900000008004100009040001600050080001600066100002800082245009700110250001200207260003700219300001400256650001600270650002700286650001900313IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.38bWEL  aWellman, William R.     0aElementary industrial ElectronicscWilliam R. Wellman                                         a2nd ed.  aNew York.bD. Van Nostrandc1957  avii,455p.  aElectronics  aIndustrial Electronics  aNASA Thesaurus