000 00270nam a2200109Ia 4500
999 _c20041
_d20041
020 _a0890061394
100 _aDon J Torrieri
245 _aPrinciples of Secure Communication Systems
260 _c1985
_bARTECH HOUSE
_aNorwood, MA 02062
300 _axii+453
942 _cREF