| 000 | 00400nam a2200157Ia 4500 | ||
|---|---|---|---|
| 008 | 131223s9999 xx 000 0 und d | ||
| 040 | _aISI KOLKATA | ||
| 041 | _aEnglish | ||
| 082 |
_a652.809 _bK12 |
||
| 100 | _aKahn David | ||
| 245 |
_aCodebreakers _bthe story of secret writing |
||
| 260 |
_aToronto _bCollier-Macmillan _c1969 |
||
| 300 | _axviii,1164p. | ||
| 650 | _aCryptography | ||
| 942 | _cBK | ||
| 999 |
_c64719 _d64719 |
||