01147nam a2200301 i 450099100067622970753620020507172130.0951012s1977 us ||| | eng 0471326615b10741720-39ule_instLE01300562ExLDip.to Matematicaeng621.38AMS 94AGregg, William David534619Analog and digital communication :concepts, systems, applications, and services in electrical dissimination of aural, visual and data information /W. David GreggNew York :J. Wiley & Sons,c1977xix, 603 p. :ill. ;24 cm.Includes bibliographical references and indexCommunicationInformationTelecommunication.b1074172021-09-0628-06-02991000676229707536LE013 94A GRE11 (1977)12013000037202le013-E0.00-l- 02020.i1083306728-06-02Analog and digital communication910819UNISALENTOle01301-01-95ma -engus 01