Gaines, Helen Fouche <br/><br/>
Cryptanalysis;   a study of ciphers and their solution / 
Helen Fouche Gaines  
 - New York  Dover Publications  2016 
 - 237 p. 
<br/><br/><label>ISBN: </label>9780486200972 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciphers<br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>652.8 GAI-H