Fun With Codes and Ciphers Workbook - Softcover

Gleason, Norma

 
9780486254050: Fun With Codes and Ciphers Workbook

Inhaltsangabe

Fascinating, fun-filled book tells how to write and decipher coded messages. Easy-to-follow directions let even young beginners become experts in backward ciphers, false word division, null ciphers and more. Workbook includes ample space for decoding 68 secret messages. Solutions at end of book.

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9780613943901: Fun with Codes and Ciphers Workbook

Vorgestellte Ausgabe

ISBN 10:  0613943902 ISBN 13:  9780613943901
Verlag: Tandem Library, 1987
Hardcover