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The Mammoth Book of Secret Code Puzzles: B Format (Mammoth Books)

by Elonka Dunin

ISBN 13: 9781845293253

Format: Paperback (608 pages)
Publisher: Robinson
Published: 27 Apr 2006

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The Mammoth Book of Secret Codes and Cryptograms: Over 600 Mystery Codes to be Cracked!

by Elonka Dunin

ISBN 13: 9780786717262

Format: Paperback (512 pages)
Publisher: Avalon Publishing Group
Published: 22 Mar 2006

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