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020 | _a0256088640 | ||
082 | _a621.38195404 W221 | ||
100 | _aWALRAND,J | ||
245 | 0 | _aCOMMUNICATION NETWORKS: A FIRST COURSE | |
260 |
_aBURR RIDGE _bAKSEN _c1991 |
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300 | _a24X19 | ||
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