B.R Bettridge Bettridge,B.R creator London Norman 1954 71p Semiconductors (Page-11), Crystal Diodes And How They Work (Page-14), Transistors And How They Work (Page-20), Germanium Diodes In Tv Circuits (Page-24), Miscellaneous Circuits For Germanium Diodes (Page-28), Transistor Circuitry (Page-33), Practical Radio Circuits For Point Contact Transistors (Page-39), Miscellaneous Point Contact Transistor Circuits (Page-46), Junction Transistor Characteristics (Page-49), Junction Transistor Circuits (Page-52), Testing Of Diodes And Transistors (Page-58), The Transistor And Its Equivalent Network (Page-62), What Does The Future Hold (Page-68). What They Are and How to USE Them / Telecommunication Engineering 621.381528,BET 20221202182908.0