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*1001 $aMurphy, R. J.$0(NO-TrBIB)97044992$_120085500
*24510$aTelecommunications networks :$ba technical introduction$cR. J. "Bert" Murphy
*260  $aIndianapolis, Ind.$bHoward W. Sams$c1987
*300  $aXXIII, 304 s.$bill.
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