000 00275nam a22000977a 4500
008 130408b xxu||||| |||| 00| 0 eng d
020 _a0764548999
_cAvalable
050 _a621.382 HOR
_b002365
245 _aCommunications Systems And Networks
_cHorak Ray
260 _aUSA
_bWiley
_c2002
999 _c23319
_d23319