| 000 | 00924nam a2200289 a 4500 | ||
|---|---|---|---|
| 005 | 20250930105006.0 | ||
| 008 | 981208s1979 uk 00 eng d | ||
| 020 | _a085012199X | ||
| 035 | _a159013 | ||
| 039 | 9 |
_y08-18-1999 _zload |
|
| 090 | _aTK5105.P74 | ||
| 090 | _aTK5105 | ||
| 100 | 1 |
_aPritchard, J. A. T., _q(John A. T.) _946800 |
|
| 245 | 1 | 0 |
_aSecurity in communications systems _cby J.A.T. Pritchard |
| 260 |
_aManchester _bNCC Publications _c1979 |
||
| 300 | _a(7), 29p. ill. 30cm | ||
| 590 | _a1 | ||
| 650 |
_aData transmission systems _xSecurity measures |
||
| 700 | 2 | _aNational Advisory Committee on Computer Security. Communications Sub-committee | |
| 907 |
_a.b12077069 _b2021-05-28 _c2019-11-12 |
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| 942 |
_c01 _n0 _kTK5105.P74 |
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| 914 | _avtls000214541 | ||
| 991 | _aFak Sains Matematik | ||
| 998 |
_at _b1999-05-08 _cm _da _feng _g _y0 _z.b12077069 |
||
| 999 |
_c209209 _d209209 |
||