51. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 15.12
Dealer: Abebooks, Ebooksweb
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover . [Bensalem, PA, U.S.A.] [Publication Year: 1955]  

52. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 9.95
Dealer: Abebooks, GF Books, Inc.
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Book is in Used-LikeNew 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. [Hawthorne, CA, U.S.A.] [Publication Year: 1955]  

53. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 3.99
Dealer: Abebooks, HPB-Emerald
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] 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: 1955]  

54. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 3.99
Dealer: Abebooks, Half Price Books Inc.
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] 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: 1955]  

55. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 15.97
Dealer: Abebooks, Irish Booksellers
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] 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: 1955]  

56. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 8.88
Dealer: Abebooks, Lucky's Textbooks
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover [Dallas, TX, U.S.A.] [Publication Year: 1955]  

57. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 9.95
Dealer: Abebooks, Russell Books
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Special order direct from the distributor [Victoria, BC, Canada] [Publication Year: 1955]  

58. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 4.98
Dealer: Abebooks, Solr Books
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Pages are clean! The cover has visible markings and wear. Some corner dings. Some foxing on the edges The book is slightly cocked Fast Shipping - Each order powers our free bookstore in Chicago and sending books to Africa! [Skokie, IL, U.S.A.] [Publication Year: 1955]  

59. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 15.40
Dealer: Abebooks, Wonder Book
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Acceptable condition. (cryptography, ciphers) A readable, intact copy that may have noticeable tears and wear to the spine. All pages of text are present, but they may include extensive notes and highlighting or be heavily stained. Includes reading copy only books. [Frederick, MD, U.S.A.] [Publication Year: 1955]  

60. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 5.69
Dealer: Abebooks, Wonder Book
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Very Good condition. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. [Frederick, MD, U.S.A.] [Publication Year: 1955]  

61. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 14.28
Dealer: AbebooksDE, moluna
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: DOVER PUBN INC] Softcover InhaltsverzeichnisPrefaceI. Secret Weapon No. OneII. The History of Secret WritingIII. Transposition CiphersIV. Substitution CiphersV. Codes Compared with CiphersVI. Cryptanalysis Transposition Ciphers Informal Substitution. [Greven, Germany] [Publication Year: 1955]  

62. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 8.90
Dealer: AbebooksUK, Prestige Books
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover [Buxton, DERBY, United Kingdom] [Publication Year: 1955]  

63. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 14.90
Dealer: ZVAB, Wonder Book
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Acceptable condition. (cryptography, ciphers) A readable, intact copy that may have noticeable tears and wear to the spine. All pages of text are present, but they may include extensive notes and highlighting or be heavily stained. Includes reading copy only books. [Frederick, MD, U.S.A.] [Publication Year: 1955]  

64. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 5.51
Dealer: ZVAB, Wonder Book
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Very Good condition. A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp. Bundled media such as CDs, DVDs, floppy disks or access codes may not be included. [Frederick, MD, U.S.A.] [Publication Year: 1955]  

65. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 13.03
Dealer: ZVAB, moluna
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: DOVER PUBN INC] Softcover InhaltsverzeichnisPrefaceI. Secret Weapon No. OneII. The History of Secret WritingIII. Transposition CiphersIV. Substitution CiphersV. Codes Compared with CiphersVI. Cryptanalysis Transposition Ciphers Informal Substitution. [Greven, Germany] [Publication Year: 1955]  

66. Cryptography: The Science of Secret Writing
by Smith, Laurence Dwight; Laurence Dwight Smith (Author) 
Price: USD 10.00
Dealer: Abebooks, gearbooks
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications, Inc., New York] Softcover 164 pp. Solidly bound copy with moderate use. Occassional pencil markings on text. Stains on top and fore edges. Marks on front cover. Creased front cover. [The Bronx, NY, U.S.A.] [Publication Year: 1943]  

67. Cryptography: the Science of Secret Writing
by Laurence D. Smith 
Price: USD 21.51
Dealer: Alibris, Revaluation Books via Alibris
Description: Dover Pubns 2000 Softcover New 164 pages. 8.00x5.50x0.25 inches. 

68. Cryptography: the Science of Secret Writing
by Laurence D. Smith 
Price: USD 21.77
Dealer: Alibris, Revaluation Books via Alibris
Description: Dover Pubns 2000 Softcover New 164 pages. 8.00x5.50x0.25 inches. 

69. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 6.00
Dealer: Alibris, Best and Fastest Books via Alibris
Description: Dover Publications 1955 Trade paperback Very good Very well kept copy, unmarked pages, tight binding, minimal wear. Fast Shipping-Safe and Secure Bubble Mailer! 

70. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 3.99
Dealer: Alibris, HPB-Emerald via Alibris
Description: Dover Publications 1955 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! 

71. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 4.99
Dealer: Alibris, HPB-Emerald via Alibris
Description: Dover Publications 1955 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! 

72. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 3.99
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Dover Publications 1955 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! 

73. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 4.99
Dealer: Alibris, Half Price Books Inc via Alibris
Description: Dover Publications 1955 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! 

74. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 12.95
Dealer: Alibris, Russell Books via Alibris
Description: Dover Publications 1955 Trade paperback New Special order direct from the distributor. 

75. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 4.98
Dealer: Alibris, Solr Books via Alibris
Description: Dover Publications 1955 Trade paperback Good Pages are clean! The cover has visible markings and wear. Some corner dings. Some foxing on the edges The book is slightly cocked Fast Shipping-Each order powers our free bookstore in Chicago and sending books to Africa! 

76. Cryptography: the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 4.74
Dealer: Alibris, Wonder Book - Member ABAA/ILAB via Alibris
Description: Dover Publications 1955 Trade paperback Very Good Very Good condition. A copy that may have a few cosmetic defects. May also contain a few markings such as an owner's name, short gifter's inscription or light stamp. 

77. Cryptography
by Laurence D. Smith 
Price: USD 10.87
Dealer: AbebooksUK, Blackwell's
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc. 1998-02-07, New York] Softcover Language: ENG [London, United Kingdom] [Publication Year: 1998]  

78. Cryptography
by Laurence D. Smith 
Price: USD 10.55
Dealer: AbebooksUK, Greener Books
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc.] 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: 2000]  

79. Cryptography
by Laurence D. Smith 
Price: USD 20.50
Dealer: Alibris, Blackwell's via Alibris
Description: New York Dover Publications Inc 1955 Trade paperback New in new dust jacket. 

80. Cryptography
by Laurence D. Smith 
Price: USD 16.79
Dealer: Alibris, Greener Books via Alibris
Description: Dover Publications Inc 02/01/2000 Paperback 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. 

81. Cryptography
by Laurence D. Smith 
Price: USD 10.21
Dealer: ZVAB, Blackwell's
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc. 1998-02-07, New York] Softcover Language: ENG [London, United Kingdom] [Publication Year: 1998]