TY  - BOOK
AU  - Dunin, Elonka
AU  - Schmeh, Klaus
TI  - Codebreaking a Practical Guide 
SN  - 9781472144218
U1  - 652.8 
PY  - 2020///
CY  - London : 
PB  - Robinson, 
KW  - Cryptography
N1  - YY
UR  - https://www.worldcat.org/title/codebreaking-a-practical-guide/oclc/1268465980
UR  - https://eaklibrary.neduet.edu.pk:8443/catalog/bk/books/toc/978-1-4721-4421-8.pdf
ER  -