How to Write Codes and Send Secret Messages

(No reviews yet) Write a Review
$7.33 - $300.00
UPC:
9780590026062
Maximum Purchase:
2 units
Binding:
Paperback
Publication Date:
9/1/1973
Author:
John Lawrence Peterson
Language:
english
Edition:
First Edition
How to Write Codes and Send Secret Messages

Product Overview

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.

Reviews

(No reviews yet) Write a Review