00522    a2200181   4500020001800000040001300018082001000031082001000041100002200051245007000073250001100143260005800154300002300212500002300235650003000258650002200288650003000310  a0-13-096139-6  aDLCbDLC  a004.6  a004.61 aBeyda, William J.00aData communications : from basics to broadband cWilliam J. Beyda  a3. ed.  aUpper Saddle River, N.J. :bPrentice Hall,ccop. 2000  axv, 330 s. :bill.  aPrevious ed.: 1996 7aData transmission systems 7aComputer networks 7aTelecommunication systems