Friedman, William F <br/><br/>
The Classic Elements of Cryptanalysis with new added Problems for Solver  

 - USA  Aegean park press  c1976 
 - v,172,p  ill  26,cm. 
<br/><br/><label>ISBN: </label>0894120026 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>005.82 FRI