00437nam a22001572  4500001001100000005001700011008004100028020002800069040001500097050001900112100003800131245002000169260003900189300001600228650003500244000000517020151217151954.0070607s        xx            000 0 eng d  a8120314492 :cKES 2,200  aKABUcKABU 0aTK5105.5b.D471 aDerfler, J. Frank Jr.@000015631610aUsing networks.  aNew Delhi :bPrentice Hall,c1998.  avii, 502 p. 0aComputer networks.@0000148214