000 00284nam a2200133Ia 4500
999 _c54990
_d54990
020 _a9780071321174
100 _a Bruce A Carlson
245 _aCommunication Systems
250 _a5
260 _c2011
_bMGH
_aNew Delhi
300 _axx+924
700 _aPaul B Crilly
942 _cBB