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Colossus: Bletchley Park's Last Secret

by Paul Gannon

ISBN 13: 9781843543305

Format: Hardcover (592 pages)
Publisher: Atlantic Books
Published: 10 Jan 2006

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Inside Room 40

by Paul Gannon

ISBN 13: 9780711034082

Format: Hardcover (192 pages)
Publisher: Ian Allan Publishing
Published: 11 Apr 2010

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Rock Trails Snowdonia: A Hillwalker's Guide to the Geology and Scenery

by Paul Gannon

ISBN 13: 9781906095048

Format: Paperback (240 pages)
Publisher: Pesda Press
Published: 03 Mar 2008

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Rock Trails Snowdonia : A Hillwalker's Guide to the Geology & Scenery

by Paul Gannon

ISBN 13: 9781906095420

Format: Paperback (292 pages)
Publisher: Pesda Press
Published: 01 Oct 2013

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