TY  - BOOK
AU  - Gaines, Helen Fouche
TI  - Cryptanalysis; : a study of ciphers and their solution 
SN  - 9780486200972
U1  - 652.8 GAI-H 
PY  - 2016///
CY  - New York
PB  - Dover Publications
KW  - Ciphers
KW  - Cryptography
ER  -