00534nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001700084100002900101245011400130260003500244300001400279650001900293650001300312650003900325IN-BaIIA211028s9999    xx            000 0 eng d  a0-87692-713-4  cIIA Library  a621.392bVIS  aViswanathan, Thiagarajan 0aTelecommunication switching systems and networkscThiagarajan Viswanathan                                      aNew DelhibPrentice-Hallc1992  axx, 583p.  aNASA thesaurus  aNetworks  aTelecommunication switching system