01172pam a2200325 a 4500 28675 28646 1542046 EG-ScBUE 20200907113647.0 910403t1991 enka f 001 0 eng d 0471930512 9780471930518 DLC eng rda DLC DLC EG-ScBUE 621.382 HEL 22 Held, Gilbert, 1943- author. Understanding data communications : from fundamentals to networking / Gilbert Held, 4-degree consulting, Macon, Georgia, USA. West Sussex, England : John Wiley & Sons Ltd, [1991] c1991 xviii, 546 pages : illustrations ; 25 cm rdacontent text txt rdamedia unmediated n rdacarrier volume nc Includes index. Data transmission systems. BUEsh Computer networks. BUEsh GGEN August2020 Reading book 34232 7 cbc orignew 1 ocip 19 y-gencatlg ddc BB 0 0 ddc 0 0 Baccah MAIN MAIN 1ST 2020-09-07 Purchase 0 621.382 HEL 000049574 2025-07-15 00:00:00 2020-09-07 BB