00528nam a2200181 a 450000500170000000800410001702000180005810000230007624500590009925000110015826000360016930000220020550000450022765000300027265000220030285200110032485200110033520190520021713.0080331s19uu    xx            00    eng d  a981-3026-93-610aStallings, William10aData and computer communications /cWilliam Stallings.  a4th ed0 aCainta, Rizal :bJemma,cc1995.  axv, 875 p. : ill.  aIncludes glossary, references and index.  aData transmission systems  aComputer networks  7OLOPSC  7OLOPSC