00374nam a2200145 a 450000500170000002000180001708200150003510000240005024500390007425000120011326000320012530000280015750000190018570000240020420251203111725.0  a9780070634145  a004.6bFOR  aForouzan, Behrouz A  aData communications and networking  a4th ed.  aNew DelhibTatac2006-R2007  axxxiv,1134p.c24cm.bPB  aincludes index  aFegan, Sophia Chung