TY - GEN AU - Miller, A. Henry TI - Electronic devices U1 - 621.381 PY - 1948/// CY - Sir Isaac Pitman PB - London KW - Telecommunication Engineering N1 - Introduction (Page-1) Thermionic Vacuum Valves (Page-2) Gas Filled Relays (Page-32) Photo Electric Cells (Page-44) Cathode Ray Tubes (Page-57)X-Ray Tubes (Page-68) Miscellaneous Devices (Page-78) ER -