1. Gordon Welchman : Bletchley Park's Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 16.09
Dealer: Abebooks, Better World Books: West
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Pen & Sword Books Limited] Softcover Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. [Reno, NV, U.S.A.] [Publication Year: 2017]  

2. Gordon Welchman : Bletchley Park's Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 8.78
Dealer: AbebooksUK, Better World Books Ltd
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Pen & Sword Books Limited] Softcover Ships from the UK. Former library book; may include library markings. Used book that is in excellent condition. May show signs of wear or have minor defects. [Dunfermline, United Kingdom] [Publication Year: 2017]  

3. Gordon Welchman : Bletchley Park's Architect of Ultra Intelligence
by Greenberg Joel 
Price: USD 8.91
Dealer: Biblio, Better World Books Ltd
Description: Pen & Sword Books Limited. Used - Very Good. Ships from the UK. Former library book; may include library markings. Used book that is in excellent condition. May show signs of wear or have minor defects. Pen & Sword Books Limited ISBN 1473885256 9781473885257 [GB] 

4. Gordon Welchman : Bletchley Park's Architect of Ultra Intelligence
by Greenberg Joel 
Price: USD 20.69
Dealer: Biblio, Better World Books
Description: Pen & Sword Books Limited. Used - Good. Former library book; may include library markings. Used book that is in clean, average condition without any missing pages. Pen & Sword Books Limited ISBN 1473885256 9781473885257 [US] 

5. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 19.78
Dealer: AbebooksUK, Anybook.com
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,650grams, ISBN:9781473885257 [Lincoln, United Kingdom] [Publication Year: 2016]  

6. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 11.27
Dealer: AbebooksUK, AwesomeBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. . [Wallingford, United Kingdom] [Publication Year: 2017]  

7. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 11.27
Dealer: AbebooksUK, Bahamut Media
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books 28/02/2017] Softcover Shipped within 24 hours from our UK warehouse. Clean, undamaged book with no damage to pages and minimal wear to the cover. Spine still tight, in very good condition. Remember if you are not happy, you are covered by our 100% money back guarantee. [Reading, United Kingdom] [Publication Year: 2017]  

8. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 5.43
Dealer: AbebooksUK, WorldofBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. [Goring-By-Sea, WS, United Kingdom] [Publication Year: 2017]  

9. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 18.17
Dealer: ZVAB, Anybook.com
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,650grams, ISBN:9781473885257 [Lincoln, United Kingdom] [Publication Year: 2016]  

10. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 10.35
Dealer: ZVAB, AwesomeBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. . [Wallingford, United Kingdom] [Publication Year: 2017]  

11. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 4.99
Dealer: ZVAB, WorldofBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. [Goring-By-Sea, WS, United Kingdom] [Publication Year: 2017]  

12. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Greenberg Joel/ Welchman Rosamond Foreward By 
Price: USD 47.28
Dealer: Biblio, Revaluation Books
Description: Frontline Books, Date: 2017. Paperback. New. reprint edition. 286 pages. 9.50x6.00x1.25 inches. 2017. Frontline Books ISBN 1473885256 9781473885257 [GB] 

13. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Greenberg Joel 
Price: USD 25.58
Dealer: Biblio, Ergodebooks
Description: Frontline Books, Date: 2017-04-03. Paperback. Used:Good. Frontline Books ISBN 1473885256 9781473885257 [US] 

14. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Greenberg Joel 
Price: USD 20.21
Dealer: Biblio, Ergodebooks
Description: Frontline Books, Date: 2017-04-03. Paperback. Used: Good. Frontline Books ISBN 1473885256 9781473885257 [US] 

15. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 19.35
Dealer: Biblio, Anybook.com
Description: Frontline Books, Date: 2016. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,650grams, ISBN:9781473885257 2016. Frontline Books ISBN 1473885256 9781473885257 [GB] 

16. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 5.30
Dealer: Biblio, World of Books Ltd
Description: Paperback. Very Good. ISBN 1473885256 9781473885257 [GB] 

17. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Greenberg, Joel/ Welchman, Rosamond (Foreward By) 
Price: USD 58.72
Dealer: Alibris, Revaluation Books via Alibris
Description: Frontline Books 2017 Softcover New Reprint edition. 286 pages. 9.50x6.00x1.25 inches. 

18. Gordon Welchman: Bletchley Park's Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 30.34
Dealer: Alibris, Anybook.com via Alibris
Description: Frontline Books 2016 Paperback This is an ex-library book and may have the usual library/used-book markings inside. This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 650grams, ISBN: 9781473885257. 

19. Gordon Welchman: Bletchley Park? S Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 45.00
Dealer: Alibris, Bonita via Alibris
Description: Frontline Books 2017 paperback Good Access codes and supplements are not guaranteed with used items. May be an ex-library book. 

20. Gordon Welchman: Bletchley Park? S Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 77.46
Dealer: Alibris, Bonita via Alibris
Description: Frontline Books 2017 paperback New 

21. Gordon Welchman: Bletchley Park?s Architect of Ultra Intelligence
by Greenberg Joel 
Price: USD 52.48
Dealer: Biblio, Bonita
Description: paperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. ISBN 1473885256 9781473885257 [US] 

22. Gordon Welchman: Bletchley Park?s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 28.68
Dealer: Abebooks, Front Cover Books
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover [Denver, CO, U.S.A.] [Publication Year: 2017]  

23. Gordon Welchman: Bletchley Parks Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 5.01
Dealer: Biblio, Greener Books Ltd
Description: Frontline Books, 02/28/Date: 2017. Reprint. Paperback. Used; Very Good. **WE SHIP WITHIN 24 HRS FROM LONDON, UK, 98% OF OUR ORDERS ARE RECEIVED WITHIN 7-10 DAYS. We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books. 2017. Frontline Books ISBN 1473885256 9781473885257 [GB] 

24. Gordon Welchman: Bletchley Parks Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 8.71
Dealer: AbebooksUK, Greener Books
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover **SHIPPED FROM UK** We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books. [London, United Kingdom] [Publication Year: 2017]  

25. Gordon Welchman: Bletchley Parks Architect of Ultra Intelligence
by Joel Greenberg 
Price: USD 16.83
Dealer: Alibris, Greener Books via Alibris
Description: Frontline Books 02/28/2017 Reprint Paperback Very good **SHIPPED FROM UK** We believe you will be completely satisfied with our quick and reliable service. All orders are dispatched as swiftly as possible! Buy with confidence! Greener Books. 

26. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel/ Welchman, Rosamond (Foreward By) 
Price: USD 48.36
Dealer: AbebooksUK, Revaluation Books
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover reprint edition. 286 pages. 9.50x6.00x1.25 inches. In Stock. [Exeter, United Kingdom] [Publication Year: 2017]  

27. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 27.87
Dealer: Abebooks, GoldBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover New Copy. Customer Service Guaranteed [Denver, CO, U.S.A.] [Publication Year: 2017]  

28. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 104.45
Dealer: Abebooks, GoldenDragon
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Buy for Great customer experience [Houston, TX, U.S.A.] [Publication Year: 2017]  

29. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 23.28
Dealer: Abebooks, GoldenWavesOfBooks
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover New. Fast Shipping and good customer service [Fayetteville, TX, U.S.A.] [Publication Year: 2017]  

30. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 24.43
Dealer: Abebooks, Wizard Books
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover New [Long Beach, CA, U.S.A.] [Publication Year: 2017]  

31. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 32.09
Dealer: Abebooks, Book Deals
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover New! This book is in the same immaculate condition as when it was published 1.23 [Tucson, AZ, U.S.A.] [Publication Year: 2017]  

32. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 31.18
Dealer: Abebooks, Books Unplugged
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Buy with confidence! Book is in good condition with minor wear to the pages, binding, and minor marks within 1.23 [Amherst, NY, U.S.A.] [Publication Year: 2017]  

33. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 32.08
Dealer: Abebooks, GF Books, Inc.
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Book is in NEW condition. 1.23 [Hawthorne, CA, U.S.A.] [Publication Year: 2017]  

34. Gordon Welchman: Bletchley Park’s Architect of Ultra Intelligence
by Greenberg, Joel 
Price: USD 19.88
Dealer: Abebooks, GF Books, Inc.
Description: ISBN10: 1473885256, ISBN13: 9781473885257, [publisher: Frontline Books] Softcover Book is in Used-VeryGood condition. Pages and cover are clean and intact. Used items may not include supplementary materials such as CDs or access codes. May show signs of minor shelf wear and contain very limited notes and highlighting. 1.23 [Hawthorne, CA, U.S.A.] [Publication Year: 2017]