| 000 | 00879cam a2200313 a 4500 | ||
|---|---|---|---|
| 001 | 150128512 | ||
| 003 | UkMaC | ||
| 005 | 20211216151104.0 | ||
| 008 | 000607t20001999enk 000 0 eng | ||
| 015 | _aGBA0X5928 | ||
| 020 | _a9781857028898 (pbk.) | ||
| 035 | _a(UK-LoICS)i9781857028898 | ||
| 035 | _a(StGlU).b28455939 | ||
| 038 | _aUk | ||
| 040 | _aBDS | ||
| 050 | _aZ104 | ||
| 082 | 1 | 4 |
_a652.8 _221 |
| 100 | 1 | _aSingh, Simon. | |
| 245 | 1 | 4 |
_aThe code book : _bthe secret history of codes and code-breaking / _cSimon Singh. |
| 260 |
_aLondon : _bFourth Estate, _c2000, c1999. |
||
| 300 |
_a400 p. : _bill. ; _c20 cm. |
||
| 500 | _aOriginally published: 1999. | ||
| 650 | 0 | _aCryptography. | |
| 650 | 0 |
_aCryptography _xHistory. |
|
| 650 | 0 | _aCiphers. | |
| 650 | 0 | _aData encryption (Computer science) | |
| 650 | 0 | _aConfidential communications. | |
| 942 |
_2ddc _n0 |
||
| 999 |
_c63738 _d63738 |
||