00464nam 2202488 45000010005000000030023000050050009000280080041000370820008000780720035000860200018001211000023001392600016001622500006001782450040001846500035002246500025002592488StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a621 aThe Convertional Telephone Set a0-7506-9944-2 aStephen J. Bigclow bSAMS c1991 a5 aUnderstanding telephone electronics aThe Convertional Telephone Set aThe Telephone System