How to Write Codes and Send Secret Messages
Edición de la obra How to Write Codes and Send Secret Messages
| Autor | John Lawrence Peterson |
|---|---|
| Editorial | Scholastic Paperbacks |
| Fecha de publicación | September 1973 |
| Idioma | inglés |
| Formato | Paperback |
| ISBN-13 | 9780590026062 |
| ISBN-10 | 0590026062 |
| Número de Cutter | P485h |
Explains how to write and decipher space codes, hidden word codes, and alphabet codes and gives formulas for invisible ink. Includes suggestions for delivering coded messages.