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| 100 | 1 |  | |a Stallings, William | 
| 245 | 1 | 0 | |a Cryptography and network security : 
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| 250 |  |  | |a 2nd ed. | 
| 504 |  |  | |a Περιλαμβάνει βιβλιογραφίες και ευρετήριο. | 
| 650 |  | 0 | |a Coding theory | 
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