| 000 | 00534nam a2200181Ia 4500 | ||
|---|---|---|---|
| 008 | 191130s1956##################000#0#eng## | ||
| 020 | _a9780486200972 | ||
| 040 |
_aACL _cACL |
||
| 082 | _a793 GAI | ||
| 100 | _aGaines, Helen Fouché | ||
| 245 |
_aCryptanalysis : a study of ciphers and their solution _cHelen Fouché Gaines |
||
| 260 |
_aNew York _bDover Publications _c1956 |
||
| 300 | _avi-237 p. : ill | ||
| 650 | _aCryptography | ||
| 990 | _a970c3bd0ac10000c4f5ddf436e100d00 | ||
| 991 | _a333905 | ||
| 999 |
_c249907 _d249907 |
||