00545nam a2200181 a 450000500170000002000150001708200170003210000210004924500490007025000120011926000440013130000250017569000400020096400160024099700190025699900170027595200710029220251203110657.0  a8120309251  a005.758bBLA  aBlack, Uyless D.  aData Communications and Distributed Networks  a3rd ed.  aNew DelhibPrentice-Hall of Indiac2004  axvi,426p.c26 cm. PB  aData communications-Network systems  bcdefg_  a116588 LIBSC C  c98659d98659  00104070aPUbPUd2005-12-13g180.00l0o005.758 BLAp116588yBK