TY  - GEN
AU  - : Friedman, William F. (William Frederick),
TI  - Elements of cryptanalysis
SN  - 0894120026
U1  - 001.5436,FRI 
CY  - USA
PB  - Aegean park Press
KW  - Elements of cryptanalysis
N1  - Part.1. The Analysis of Ciphers (Page 1-6), Part.2. The Analysis of Codes (Page 84-91)
ER  -