000 00395nam a2200133Ia 4500
008 210917s9999 xx 000 0 und d
082 _a621.380 413 .S1
100 _aSilage, Dennis
245 0 _aDigital Communication Systems Using Systemvue
260 _aNew Delhi
260 _b Firewall
260 _c2007
942 _cCD
999 _c151327
_d151327