| ID | 004536 |
| Call Number | 001.54/GAR |
| Title Proper | Codes, Ciphers and Secret Writing |
| Language | ENG |
| Author | Gardner, Martin |
| Publication | USA, Dover Publications, Inc., 1972. |
| Description | 96 p Dark Blue Spine |
| Note | Explains in simple terms how to encode and decode messages in various ciphers, describes coding machines, and gives formulas for invisible ink. |
| Note | Easy Transposition Ciphers
Easy Substitution Ciphers
How to Break Substitution Ciphers
Hard-To-Break Polyalphabetic Ciphers
Simple Code Machines
Invisible Writing
Bizarre Methods of Message Sending
Codes for Other Worlds |
| Standard Number | 0486247619 |
| Price. Qualification | Rs.140(Pb) |
| Classification Number | 001.54 |
| Key Words | Ciphers ; Cryptography ; Signs and symbols ; Cipher and telegraph codes |