00433nam a2200145Ia 4500003000900000008004100009040001600050080001900066100001900085245010400104260003100208300001300239650001600252650001900268IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.382.3bBET  aBettridge, B R 0aTransistors and crystal diodes : what they are and how to use themcBernard Robert Arthur Bettridge  aLondonbNorman Pricec1954  aix, 72p.  aElectronics  aNASA Thesaurus