000 00348pam a2200157a 44500
008 230515b2008 xxu||||| |||| 00| 0 eng d
020 _aNULL
041 _aENGLISH
082 _a621.382 PRO
100 _aPROKIS JOHN G
245 _aDIGITAL COMMUNICATIONS
250 _a1
260 _a
_bMAGRAW-HILL
_c2008
300 _a1150
650 _aNULL
999 _c638027
_d638027