1. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.59
Dealer: Alibris, Solr Books via Alibris
Description: Harper Perennial 1972 Trade paperback Fair The pages are sun faded and slightly yellowing Pages are clean! The binding is split in the middle of the text but all pages are intact There are some creases on the spine Fast Shipping-Each order powers our free bookstore in Chicago and sending books to Africa! 

2. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.59
Dealer: Alibris, Solr Books via Alibris
Description: Harper Perennial 1972 Trade paperback Good Some shelfwear and darkening due to age. Writing from previous owner on first page. 

3. On Certainty Harper Perennial Modern Thought English and German Edition
by Ludwig Wittgenstein 
Price: USD 5.59
Dealer: Biblio, Books4Cause Inc.
Description: UsedGood. Some shelfwear and darkening due to age. Writing from previous owner on first page. ISBN 0061316865 9780061316869 [US] 

4. On Certainty Harper Perennial Modern Thought English and German Edition
by Ludwig Wittgenstein 
Price: USD 5.59
Dealer: Biblio, Books4Cause Inc.
Description: UsedAcceptable. The pages are sun faded and slightly yellowing Pages are clean! The binding is split in the middle of the text but all pages are intact There are some creases on the spine Fast Shipping - Each order powers our free bookstore in Chicago and sending books to Africa! ISBN 0061316865 9780061316869 [US] 

5. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.59
Dealer: Abebooks, Solr Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Some shelfwear and darkening due to age. Writing from previous owner on first page. [Skokie, IL, U.S.A.] [Publication Year: 1972]  

6. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.99
Dealer: Alibris, HPB-Diamond via Alibris
Description: Harper & Row 1972 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

7. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.99
Dealer: Alibris, HPB Inc. via Alibris
Description: Harper & Row 1972 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

8. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.99
Dealer: Abebooks, HPB-Diamond
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! [Dallas, TX, U.S.A.] [Publication Year: 1972]  

9. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 5.99
Dealer: Abebooks, HPB Inc.
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! [Dallas, TX, U.S.A.] [Publication Year: 1972]  

10. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 6.51
Dealer: Abebooks, -OnTimeBooks-
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Book may contain some writing, highlighting, and or cover damage. Shipped fast and reliably! [Phoenix, AZ, U.S.A.] [Publication Year: 1972]  

11. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein; G.E.M. Anscombe [Editor]; G.H. Von Wright [Editor] 
Price: USD 7.00
Dealer: Alibris, Chaparral Books via Alibris
Description: Harper & Row 1972-09-06 First THUS Paperback Very Good Size: 5x0x8; Bilingual German-English edition. Clean and tight with minor handling wear. 8vo. 91pp. 

12. On Certainty Harper Perennial Modern Thought English and German Edition
by Ludwig Wittgenstein; GEM. Anscombe Editor; GH. von Wright Editor G. E. G. H. 
Price: USD 7.00
Dealer: Biblio, Chaparral Books
Description: Harper & Row, Date: 1972-09-06. First THUS. Paperback. Very Good. 5x0x8. Bilingual German-English edition. Clean and tight with minor handling wear. 8vo. 91pp. 1972. Harper & Row ISBN 0061316865 9780061316869 [US] 

13. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein; G.E.M. Anscombe [Editor]; G.H. von Wright [Editor] 
Price: USD 7.00
Dealer: Abebooks, Chaparral Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Bilingual German-English edition. Clean and tight with minor handling wear. 8vo. 91pp. [Portland, OR, U.S.A.] [Publication Year: 1972]  

14. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 7.49
Dealer: Alibris, HPB-Movies via Alibris
Description: Harper & Row 1972 Paperback Very good Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! 

15. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 7.49
Dealer: Abebooks, HPB-Movies
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority! [Dallas, TX, U.S.A.] [Publication Year: 1972]  

16. On Certainty
by Wittgenstein, Ludwig 
Price: USD 8.62
Dealer: ZVAB, Better World Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: HarperCollins Publishers] Softcover Used book that is in clean, average condition without any missing pages. [Mishawaka, IN, U.S.A.] [Publication Year: 1972]  

17. On Certainty
by Wittgenstein, Ludwig 
Price: USD 9.05
Dealer: Abebooks, Better World Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: HarperCollins Publishers] Softcover Used book that is in clean, average condition without any missing pages. [Mishawaka, IN, U.S.A.] [Publication Year: 1972]  

18. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 9.91
Dealer: Abebooks, SecondSale
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc. [Montgomery, IL, U.S.A.] [Publication Year: 1972]  

19. On Certainty
by Wittgenstein, Ludwig 
Price: USD 10.12
Dealer: Alibris, GreatBookPrices via Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback Good. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. May show signs of wear, highlighting, writing, and previous use. This item may be a former library book with typical markings. No guarantee on products that contain supplements Your satisfaction is 100% guaranteed. Twenty-five year bookseller with shipments to over fifty million happy customers. 

20. On Certainty
by Wittgenstein, Ludwig 
Price: USD 10.81
Dealer: Alibris, GreatBookPrices- via Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback Good. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. May show signs of wear, highlighting, writing, and previous use. This item may be a former library book with typical markings. No guarantee on products that contain supplements Your satisfaction is 100% guaranteed. Twenty-five year bookseller with shipments to over fifty million happy customers. 

21. On Certainty
by Ludwig Wittgenstein 
Price: USD 11.00
Dealer: Abebooks, Trouve Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row, New York] Softcover German and English edition. Pages are clean. Front/back covers have slight staining. Page block has one marking. What we publish here belongs to the last year and a half of Wittgenstein's life. [Cincinnati, OH, U.S.A.] [Publication Year: 1972]  

22. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 11.00
Dealer: Abebooks, Trouve Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row, New York] Softcover Remainder Mk. Pages are clean. Book is tight. Front cover has slight staining. 'What we publish here belongs to the last year and a half of Wittgenstein's life.' [Cincinnati, OH, U.S.A.] [Publication Year: 1972]  

23. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 11.75
Dealer: Abebooks, Books Unplugged
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Buy with confidence! Book is in good condition with minor wear to the pages, binding, and minor marks within [Amherst, NY, U.S.A.] [Publication Year: 1972]  

24. On Certainty [Uber Gewissheit] (English and German Edition)
by Wittgenstein, Ludwig; Anscombe, G.E.M. (Trans. ); Paul, Denis (Trans. ); Von Wright, G.H. (Ed. ) 
Price: USD 12.00
Dealer: Alibris, The Book House - Saint Louis via Alibris
Description: New York Harper Torchbooks 1975 Trade Paperback Good Good trade paperback, 1975. Slight wear. Previous owner's name on first page. Bilingual text in English and German. 

25. On Certainty
by Wittgenstein, Ludwig 
Price: USD 12.00
Dealer: Alibris, Exlibooks via Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback Very good. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. Audience: General/trade. 

26. On Certainty Uber Gewissheit English and German Edition
by Wittgenstein Ludwig; Anscombe GEM. trans.; Paul Denis trans.; Von Wright GH. ed. G. E. G. H. 
Price: USD 12.00
Dealer: Biblio, The Book House - St. Louis
Description: New York: Harper Torchbooks, Date: 1975. Good trade paperback, 1975. Slight wear. Previous owner's name on first page. Bilingual text in English and German.. Trade Paperback. Good. 1975. Harper Torchbooks ISBN 0061316865 9780061316869 [US] 

27. On Certainty [Uber Gewissheit] (English and German Edition)
by Wittgenstein, Ludwig; Anscombe, G.E.M. (trans.); Paul, Denis (trans.); Von Wright, G.H. (ed.) 
Price: USD 12.00
Dealer: Abebooks, The Book House, Inc. - St. Louis
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper Torchbooks, New York] Softcover Good trade paperback, 1975. Slight wear. Previous owner's name on first page. Bilingual text in English and German. [St. Louis, MO, U.S.A.] [Publication Year: 1975]  

28. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 12.29
Dealer: Abebooks, Book Deals
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Acceptable/Fair condition. Book is worn, but the pages are complete, and the text is legible. Has wear to binding and pages, may be ex-library. [Tucson, AZ, U.S.A.] [Publication Year: 1972]  

29. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 12.30
Dealer: Abebooks, Irish Booksellers
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover SHIPS FROM USA. Used books have different signs of use and do not include supplemental materials such as CDs, Dvds, Access Codes, charts or any other extra material. All used books might have various degrees of writing, highliting and wear and tear and possibly be an ex-library with the usual stickers and stamps. Dust Jackets are not guaranteed and when still present, they will have various degrees of tear and damage. All images are Stock Photos, not of the actual item. [Portland, ME, U.S.A.] [Publication Year: 1972]  

30. On Certainty
by Wittgenstein, Ludwig 
Price: USD 12.73
Dealer: Alibris, booksXpress via Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback New. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. 

31. On Certainty
by Ludwig Wittgenstein 
Price: USD 12.97
Dealer: Biblio, Ergodebooks
Description: Harper Perennial, Date: 1900-01-01. Paperback. Used: Good. Harper Perennial ISBN 0061316865 9780061316869 [US] 

32. On Certainty
by Wittgenstein Ludwig 
Price: USD 13.10
Dealer: Biblio, Better World Books
Description: HarperCollins Publishers. Used - Good. Used book that is in clean, average condition without any missing pages. HarperCollins Publishers ISBN 0061316865 9780061316869 [US] 

33. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 13.48
Dealer: Alibris, SurplusTextSeller via Alibris
Description: Harper Perennial 1972 Trade paperback Good Ships in a BOX from Central Missouri! May not include working access code. Will not include dust jacket. Has used sticker(s) and some writing or highlighting. UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). 

34. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 13.48
Dealer: Abebooks, Textbooks_Source
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Ships in a BOX from Central Missouri! May not include working access code. Will not include dust jacket. Has used sticker(s) and some writing or highlighting. UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). [Columbia, MO, U.S.A.] [Publication Year: 1972]  

35. On Certainty/Uber Gewissheit
by Wittgenstein, Ludwig; Anscombe, G. E. M.; Von Wright, G. H. 
Price: USD 13.59
Dealer: Abebooks, GreatBookPrices
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover [Columbia, MD, U.S.A.] [Publication Year: 1972]  

36. On Certainty
by Wittgenstein, Ludwig 
Price: USD 14.95
Dealer: Alibris, Pengwyn Books via Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback New. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. Audience: General/trade. 

37. On Certainty (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 14.99
Dealer: Abebooks, Eagle Eye Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row June 1986] Softcover [Decatur, GA, U.S.A.] [Publication Year: 1986]  

38. On Certainty
by Wittgenstein, Ludwig 
Price: USD 15.07
Dealer: Alibris
Description: New York, NY Harper Perennial 1972 Trade paperback New. Trade paperback (US). Glued binding. 192 p. Harper Perennial Modern Thought. 

39. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 15.74
Dealer: Alibris, SurplusTextSeller via Alibris
Description: Harper Perennial 1972 Trade paperback New Ships in a BOX from Central Missouri! UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). 

40. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 15.74
Dealer: Abebooks, Textbooks_Source
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Ships in a BOX from Central Missouri! UPS shipping for most packages, (Priority Mail for AK/HI/APO/PO Boxes). [Columbia, MO, U.S.A.] [Publication Year: 1972]  

41. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 15.75
Dealer: Abebooks, Irish Booksellers
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover SHIPS FROM USA. Used books have different signs of use and do not include supplemental materials such as CDs, Dvds, Access Codes, charts or any other extra material. All used books might have various degrees of writing, highliting and wear and tear and possibly be an ex-library with the usual stickers and stamps. Dust Jackets are not guaranteed and when still present, they will have various degrees of tear and damage. All images are Stock Photos, not of the actual item. [Portland, ME, U.S.A.] [Publication Year: 1972]  

42. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 15.97
Dealer: Abebooks, Irish Booksellers
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover SHIPS FROM USA. Used books have different signs of use and do not include supplemental materials such as CDs, Dvds, Access Codes, charts or any other extra material. All used books might have various degrees of writing, highliting and wear and tear and possibly be an ex-library with the usual stickers and stamps. Dust Jackets are not guaranteed and when still present, they will have various degrees of tear and damage. All images are Stock Photos, not of the actual item. [Portland, ME, U.S.A.] [Publication Year: 1972]  

43. On Certainty Format: Paperback
by Wittgenstein, Ludwig 
Price: USD 16.17
Dealer: Abebooks, INDOO
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper Collins Publishers] Softcover Unread copy in mint condition [Avenel, NJ, U.S.A.] [Publication Year: 1972]  

44. On Certainty (Paperback)
by Ludwig Wittgenstein 
Price: USD 16.24
Dealer: Abebooks, Grand Eagle Retail
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper Perennial, New York, NY] Softcover Paperback. Written over the last 18 months of his life and inspired by his interest in G. E. Moore's defense of common sense, this much discussed volume collects Wittgenstein's reflections on knowledge and certainty, on what it is to know a proposition for sure. The volume is full of thought-provoking insight which will prove a stimulus both to further study and to scholarly disagreement. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. [Wilmington, DE, U.S.A.] [Publication Year: 1972]  

45. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 17.25
Dealer: Abebooks, Hafa Adai Books
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover [Moncks Corner, SC, U.S.A.] [Publication Year: 1972]  

46. On Certainty
by Ludwig Wittgenstein, G. E. M. Anscombe, G. H. von Wright 
Price: USD 18.02
Dealer: ZVAB, Blackwell's
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper Torchbooks 2001-05-31, New York |London] Softcover Language: ENG|GER [Oxford, OX, United Kingdom] [Publication Year: 2001]  

47. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 18.39
Dealer: Abebooks, Lucky's Textbooks
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover [Dallas, TX, U.S.A.] [Publication Year: 1972]  

48. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 18.91
Dealer: Abebooks, Books Unplugged
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover Buy with confidence! Book is in new, never-used condition [Amherst, NY, U.S.A.] [Publication Year: 1972]  

49. On Certainty (Harper Perennial Modern Thought) (English and German Edition)
by Ludwig Wittgenstein 
Price: USD 18.91
Dealer: Abebooks, Book Deals
Description: ISBN10: 0061316865, ISBN13: 9780061316869, [publisher: Harper & Row] Softcover New! This book is in the same immaculate condition as when it was published [Tucson, AZ, U.S.A.] [Publication Year: 1972]  

50. On Certainty (Harper Perennial Modern Thought)
by Wittgenstein, Ludwig  
Price: USD 18.91
Dealer: AmazonUK, AmazonUK Marketplace
Description: Used - isbn: 0061316865 - isbn13: 9780061316869 Harper Perennial