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041 _aENGLISH
082 _a621.3821
082 _bREG
100 _aREGIS J BATES
245 0 _aVOICE AND DATA COMMUNICATION HANDBOOK
250 _a5
260 _bTATA MCGRAW-HILL PUBLISHING COMPANY LIMITED
300 _axxvii+
650 _aCOMMUNICATION
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