A method of reconstructing the primary alphabet from a single one of the series of secondary alphabets ..
| Main Author: | |
|---|---|
| Corporate Author: | |
| Format: | Book |
| Language: | English |
| Published: |
Geneva, Ill. :
Riverbank Laboratories, Dept. of Ciphers,
1917
Geneva, Ill., Riverbank Laboratories, 1917 Geneva, Ill. : 1917 |
| Series: | Publication (Riverbank Laboratories) ;
no. 15 |
| Subjects: |