000 00342nam a2200133Ia 4500
999 _c21890
_d21890
008 190711s9999 xx 000 0 und d
020 _a0890061394
082 _a621.38415 T695
100 _aTorrieri, Don J
245 0 _aPrinciples of Secure Communication Systems
260 _aNorwood
_bArtech House
_c1985
300 _a24X16
942 _cBK