000 00275nam a2200109Ia 4500
008 200701s2009 xx 000 0 eng d
100 _aVISWANATHN
245 0 _aTELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
260 _bPHI NEW DELHI
300 _a583
942 _2ddc
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999 _c3991
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