00716    a2200133   4500003000500000005001700005040000900022082001600031245005800047260004100105300000900146505039300155650003400548Nust20230726114008.0  cNust  a621.383,ARM  aInstruction in Army telegraphy and telephony Vol. 1 /  aDublinbH.M stationary office c1914  a356p  aElementary theory (Page-7), Batteries (Page-37), Galvanometers and simple telegraph circuits (Page-57), Relays and single current working (Page-72), Double current working (Page-81), Translation (Page-87), High speed wheatstone automatic system (Page-115), Telephone accessories (Page-203), Testing (Page-257), Method of delaying with messages, office routine and organization (Page-296).  aTelecommunication engineering