Codes and Ciphers
by David J. Bodycombe
ISBN 13: 9781854878977
Format: Paperback (128 pages) Publisher: Robinson Published: 11 Nov 1999
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IQ Puzzles (Giants S.)
ISBN 13: 9780752574325
Format: Paperback Publisher: Parragon Book Service Ltd Published: Jan 2002 Other Format: Paperback
Optical Illusions and Puzzles
ISBN 13: 9781854878984
Format: Paperback (128 pages) Publisher: Robinson Published: 26 Nov 1998