000 00312nam a2200121Ia 4500
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082 _a652.8 D2789
100 _aDEAVOURS,C.A
245 0 _aCRYPTOLOGY YESTERDAY, TODAY AND TOMORROW
260 _aNORWOOD
_bArtech House
_c1987
300 _a24X16
942 _cBK
_2DDC
999 _c22134
_d22134