1. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1, Band 1)
by Guy, Richard: 
Price: USD 40.16
Dealer: ZVAB, Studibuch
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover 456 Seiten; 9780387208602.3 Sprache: Deutsch Gewicht in Gramm: 3 [Stuttgart, Germany] [Publication Year: 2004]  

2. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1, Band 1)
by Guy, Richard: 
Price: USD 44.32
Dealer: AbebooksDE, Studibuch
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover 456 Seiten; 9780387208602.3 Sprache: Deutsch Gewicht in Gramm: 3 [Stuttgart, Germany] [Publication Year: 2004]  

3. Unsolved Problems in Number Theory: 1 (Problem Books in Mathematics, 1)
by Guy, Richard  
Price: USD 44.83
Dealer: AmazonUK, AmazonUK Marketplace
Description: Used - isbn: 0387208607 - isbn13: 9780387208602 Springer  

4. Unsolved Problems in Number Theory
by Guy, Richard K. 
Price: USD 50.74
Dealer: ZVAB, Better World Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer New York] Hardcover Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 2004]  

5. Unsolved Problems in Number Theory
by Guy, Richard K. 
Price: USD 52.79
Dealer: Abebooks, Better World Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer New York] Hardcover Used book that is in excellent condition. May show signs of wear or have minor defects. [Mishawaka, IN, U.S.A.] [Publication Year: 2004]  

6. Unsolved Problems in Number Theory
by Guy Richard K 
Price: USD 72.25
Dealer: Biblio, Libro Co. Italia
Description: Date: 2004. 2004; br., pp. 437, cm 24x16. 2004. ISBN 0387208607 9780387208602 [IT] 

7. Unsolved Problems in Number Theory
by Guy Richard K 
Price: USD 93.02
Dealer: Biblio, Better World Books
Description: Springer New York. Used - Very Good. Used book that is in excellent condition. May show signs of wear or have minor defects. Springer New York ISBN 0387208607 9780387208602 [US] 

8. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1)
by Guy, Richard 
Price: USD 93.70
Dealer: Abebooks, Front Cover Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Denver, CO, U.S.A.] [Publication Year: 2004]  

9. Unsolved Problems in Number Theory
by Guy, Richard 
Price: USD 93.93
Dealer: Alibris
Description: New York, NY Springer 2004 3rd ed. Hard cover New. Sewn binding. Cloth over boards. 438 p. Contains: Unspecified. 

10. Unsolved Problems in Number Theory
by Guy, Richard K. 
Price: USD 95.35
Dealer: Abebooks, GreatBookPrices
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Columbia, MD, U.S.A.] [Publication Year: 2004]  

11. UNSOLVED PROBLEMS IN NUMBER THEO
by Guy, Richard 
Price: USD 97.06
Dealer: Abebooks, BennettBooksLtd
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover New. In shrink wrap. Looks like an interesting title! 1.85 [North Las Vegas, NV, U.S.A.] [Publication Year: 2004]  

12. Unsolved Problems in Number Theory (Problem Books in Mathematics (1)) by Guy, Richard [Hardcover ]
by Guy, Richard 
Price: USD 98.22
Dealer: Abebooks, booksXpress
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Bayonne, NJ, U.S.A.] [Publication Year: 2004]  

13. Unsolved Problems in Number Theory
by Guy, Richard K. 
Price: USD 104.67
Dealer: AbebooksUK, GreatBookPricesUK
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Castle Donington, DERBY, United Kingdom] [Publication Year: 2004]  

14. Unsolved Problems in Number Theory
by Guy, Richard 
Price: USD 105.90
Dealer: Alibris, Ria Christie Books via Alibris
Description: New York, NY Springer 2004 3rd ed. Hard cover New. Sewn binding. Cloth over boards. 438 p. Contains: Unspecified. 

15. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1)
by Guy, Richard 
Price: USD 106.30
Dealer: Abebooks, Lucky's Textbooks
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Dallas, TX, U.S.A.] [Publication Year: 2004]  

16. Unsolved Problems in Number Theory
by Richard Guy 
Price: USD 108.61
Dealer: Biblio, Ria Christie Collections
Description: Hard Cover. New. New Book; Fast Shipping from UK; Not signed; Not First Edition; The Unsolved Problems in Number Theory. ISBN 0387208607 9780387208602 [GB] 

17. Unsolved Problems in Number Theory
by Richard Guy 
Price: USD 115.71
Dealer: ZVAB, moluna
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer New York] Hardcover Mathematics is kept alive by the appearance of new, unsolved problems. This book provides a steady supply of easily understood, if not easily solved, problems that can be considered in varying depths by mathematicians at all levels of mathematical maturi. [Greven, Germany] [Publication Year: 2004]  

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by Richard Guy 
Price: USD 127.70
Dealer: AbebooksDE, moluna
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer New York] Hardcover Mathematics is kept alive by the appearance of new, unsolved problems. This book provides a steady supply of easily understood, if not easily solved, problems that can be considered in varying depths by mathematicians at all levels of mathematical maturi. [Greven, Germany] [Publication Year: 2004]  

19. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1)
by Guy, Richard 
Price: USD 131.00
Dealer: Abebooks, California Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Miami, FL, U.S.A.] [Publication Year: 2004]  

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by Guy, Richard 
Price: USD 135.92
Dealer: Abebooks, Byrd Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover In Used Condition [Austin, TX, U.S.A.] [Publication Year: 2004]  

21. Unsolved Problems in Number Theory (Problem Books in Mathematics)
by Guy, Richard 
Price: USD 151.35
Dealer: AbebooksUK, Mispah books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover Like New [Redhill, SURRE, United Kingdom] [Publication Year: 2004]  

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by Guy, Richard 
Price: USD 180.15
Dealer: Abebooks, GoldenWavesOfBooks
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover New. Fast Shipping and good customer service [Fayetteville, TX, U.S.A.] [Publication Year: 2004]  

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by Guy, Richard 
Price: USD 181.97
Dealer: Abebooks, Grumpys Fine Books
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by Guy, Richard 
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by Guy, Richard 
Price: USD 228.25
Dealer: Abebooks, GoldBooks
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by Guy, Richard 
Price: USD 256.75
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27. Unsolved Problems in Number Theory (PGuy, Richard
by Guy, Richard 
Price: USD 413.46
Dealer: Abebooks, Iridium_Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [DH, SE, Spain] [Publication Year: 2004]  

28. Unsolved Problems in Number Theory (Problem Books in Mathematics, 1)
by Guy, Richard 
Price: USD 461.03
Dealer: Abebooks, Hafa Adai Books
Description: ISBN10: 0387208607, ISBN13: 9780387208602, [publisher: Springer] Hardcover [Moncks Corner, SC, U.S.A.] [Publication Year: 2004]