TY - GEN AU - D. A. Wright. TI - Semi-conductors U1 - 621.38152 PY - 1958/// CY - Methuen PB - London KW - Telecommunication Engineering N1 - Electrons and Metals (Page-1) Electrons in Crystals (Page-24) Electron Emission From Semi-Conductors (Page-51) Determination of Electron Density in Semi-Conductors (Page-69) Secondary Emission (Page-78) Metal-Semi-Conductor Contacts (Page-98) Thermionic Cathodes (Page-114) Photo-Electric Cathodes (page-128) ER -