TY  - BOOK
AU  - Gaines H F
TI  - Cryptanalysis: a study of ciphers and their solution
U1  - 652.8 
PY  - 1956///
CY  - New York
PB  - Dover Pub.
KW  - Cryptography
N1  - Formerly published under the title 'Elementary cryptanalysis'
ER  -