| 000 | 00505nam a2200193u 4500 | ||
|---|---|---|---|
| 005 | 20250217031438.0 | ||
| 008 | 100424s1973 xx 000 0 eng d | ||
| 040 | _aNyNyJPI | ||
| 041 | 0 | _aeng | |
| 100 | 1 | _aNorman, Bruce | |
| 245 |
_aSecret warfare : _bthe battle of codes and ciphers / _cBruce Norman. |
||
| 260 |
_aWashington : _bAcropolis Books, _c1973. |
||
| 300 |
_a187 s. ; _c23 cm. |
||
| 500 | _aHistory | ||
| 653 | _aCryptography -- History | ||
| 653 | _aCiphers | ||
| 942 | _cBK | ||
| 997 | _a | ||
| 999 |
_c47850 _d47850 |
||