| 000 | 00401nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 131223s9999 xx 000 0 und d | ||
| 040 | _aISI KOLKATA | ||
| 041 | _aEnglish | ||
| 082 |
_a652.8 _bL163 |
||
| 100 | _aLaffin John | ||
| 245 |
_aCodes and ciphers _bsecret writing through the ages |
||
| 260 |
_aLondon _bAbelard-Schuman _c1964 |
||
| 300 | _ax,134p. | ||
| 650 | _aCryptography | ||
| 942 | _cBK | ||
| 999 |
_c56310 _d56310 |
||