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*1001 $aStallings, William$0(NO-TrBIB)90163071$_12459100
*24510$aIntegrated Services Digital Networks (ISDN) :$btutorial$cWilliam Stallings
*250  $a2nd. edition
*260  $aLos Angeles, Calif.$bThe Computer Society$c1988
*300  $a397 s.
*650 0$aIntegrated services digital networks$_46731800
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