51. Cryptography the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 13.18
Dealer: AbebooksUK, GreatBookPricesUK
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover [Castle Donington, DERBY, United Kingdom] [Publication Year: 1955]  

52. Cryptography (Paperback)
by Laurence D. Smith 
Price: USD 13.26
Dealer: Abebooks, Grand Eagle Retail
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc., New York] Softcover Paperback. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Readers interested in secret writing will find this book an excellent elementary explanation of transposition and substitution ciphers, codes, and their solutions. More than 150 problems provide practical application as well as tests of skill and ingenuity. After a brief description of the history of secret writing, the reader is introduced to fundamental principles of ciphers - transposition and substitution - and given an understanding of the various methods of enciphering and deciphering secret messages. The author covers geometrical patterns, route transcription, columnar transposition, and other methods used in transposition; under substitution, he treats mixed cipher systems, single-alphabet and polyalphabetical substitution, mechanical devices, the Vigenere system, etc. A discussion of cryptanalysis leads the reader into 151 problems for which answers are provided at the end. Appendixes offer notes on enciphering Japanese; and explanation of the Baconian Biliteral Cipher; frequency tables for English, French, German, Italian, and Spanish. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. [Wilmington, DE, U.S.A.] [Publication Year: 2000]  

53. Cryptography the Science of Secret Writing
by Smith, Laurence D. 
Price: USD 14.05
Dealer: AbebooksUK, Pieuler Store
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc.] Softcover Book is in NEW condition. Satisfaction Guaranteed! Fast Customer Service!! [Suffolk, United Kingdom] [Publication Year: 1955]  

54. 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]  

55. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.77
Dealer: Biblio, Phillybooks COM LLC
Description: UsedVeryGood. Minor shelf wear ISBN 048620247X 9780486202471 [US] 

56. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.77
Dealer: Biblio, BookCorner COM LLC
Description: UsedVeryGood. signs of little wear on the cover. ISBN 048620247X 9780486202471 [US] 

57. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.77
Dealer: Biblio, Ebooksweb COM LLC
Description: UsedVeryGood. signs of little wear on the cover. ISBN 048620247X 9780486202471 [US] 

58. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 14.82
Dealer: Abebooks, Ebooksweb
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover signs of little wear on the cover. [Bensalem, PA, U.S.A.] [Publication Year: 1955]  

59. 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]  

60. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.92
Dealer: Biblio, Ebooksweb COM LLC
Description: UsedLikeNew. Remainder mark ISBN 048620247X 9780486202471 [US] 

61. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.92
Dealer: Biblio, Phillybooks COM LLC
Description: UsedLikeNew. Remainder mark ISBN 048620247X 9780486202471 [US] 

62. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 14.92
Dealer: Biblio, BookCorner COM LLC
Description: UsedLikeNew. Remainder mark ISBN 048620247X 9780486202471 [US] 

63. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 14.97
Dealer: Abebooks, Ebooksweb
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover Remainder mark [Bensalem, PA, U.S.A.] [Publication Year: 1955]  

64. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 15.07
Dealer: Biblio, BookCorner COM LLC
Description: New. . ISBN 048620247X 9780486202471 [US] 

65. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 15.07
Dealer: Biblio, Ebooksweb COM LLC
Description: New. . ISBN 048620247X 9780486202471 [US] 

66. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 15.07
Dealer: Biblio, Phillybooks COM LLC
Description: New. . ISBN 048620247X 9780486202471 [US] 

67. 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]  

68. Cryptography: The Science of Secret Writing
by Smith Laurence D. 
Price: USD 15.40
Dealer: Biblio, Wonder Book
Description: Dover Publications. Used - Acceptable. 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. Dover Publications ISBN 048620247x 9780486202471 [US] 

69. 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]  

70. Cryptography Science of Secret Writing
by Laurence D. Smith 
Price: USD 15.44
Dealer: Abebooks, PBShop.store US
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc.] Softcover New Book. Shipped from UK. Established seller since 2000. [Wood Dale, IL, U.S.A.] [Publication Year: 1998]  

71. 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]  

72. 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. 

73. Cryptography (Paperback)
by Laurence D. Smith 
Price: USD 19.83
Dealer: AbebooksUK, CitiRetail
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc., New York] Softcover Paperback. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Readers interested in secret writing will find this book an excellent elementary explanation of transposition and substitution ciphers, codes, and their solutions. More than 150 problems provide practical application as well as tests of skill and ingenuity. After a brief description of the history of secret writing, the reader is introduced to fundamental principles of ciphers - transposition and substitution - and given an understanding of the various methods of enciphering and deciphering secret messages. The author covers geometrical patterns, route transcription, columnar transposition, and other methods used in transposition; under substitution, he treats mixed cipher systems, single-alphabet and polyalphabetical substitution, mechanical devices, the Vigenere system, etc. A discussion of cryptanalysis leads the reader into 151 problems for which answers are provided at the end. Appendixes offer notes on enciphering Japanese; and explanation of the Baconian Biliteral Cipher; frequency tables for English, French, German, Italian, and Spanish. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability. [Stevenage, United Kingdom] [Publication Year: 2000]  

74. 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. 

75. Cryptography: The Science of Secret Writing
by Smith, Laurence D 
Price: USD 21.18
Dealer: Alibris, Booksplease via Alibris
Description: New York Dover Publications 1955 Trade paperback New. Trade paperback (US). Glued binding. 176 p. Dover Puzzle Books. 

76. Cryptography (Paperback)
by Laurence D. Smith 
Price: USD 21.49
Dealer: AbebooksAU, AussieBookSeller
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications Inc., New York] Softcover Paperback. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Readers interested in secret writing will find this book an excellent elementary explanation of transposition and substitution ciphers, codes, and their solutions. More than 150 problems provide practical application as well as tests of skill and ingenuity. After a brief description of the history of secret writing, the reader is introduced to fundamental principles of ciphers - transposition and substitution - and given an understanding of the various methods of enciphering and deciphering secret messages. The author covers geometrical patterns, route transcription, columnar transposition, and other methods used in transposition; under substitution, he treats mixed cipher systems, single-alphabet and polyalphabetical substitution, mechanical devices, the Vigenere system, etc. A discussion of cryptanalysis leads the reader into 151 problems for which answers are provided at the end. Appendixes offer notes on enciphering Japanese; and explanation of the Baconian Biliteral Cipher; frequency tables for English, French, German, Italian, and Spanish. Elementary account of ciphers, history, types, etc., with 151 examples of ciphers and codes. Solutions. Good introduction for beginners. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability. [Truganina, VIC, Australia] [Publication Year: 2000]  

77. 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. 

78. 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. 

79. Cryptography: The Science of Secret Writing
by Smith, Laurence D. 
Price: USD 59.41
Dealer: Abebooks, BennettBooksLtd
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover New. In shrink wrap. Looks like an interesting title! 0.41 [North Las Vegas, NV, U.S.A.] [Publication Year: 1955]  

80. CRYPTOGRAPHY: THE SCIENCE OF SEC
by Smith, Laurence D. 
Price: USD 59.41
Dealer: Abebooks, BennettBooksLtd
Description: ISBN10: 048620247X, ISBN13: 9780486202471, [publisher: Dover Publications] Softcover New. In shrink wrap. Looks like an interesting title! 0.41 [North Las Vegas, NV, U.S.A.] [Publication Year: 1955]  

81. Cryptography: The Science of Secret Writing
by Smith Laurence D 
Price: USD 62.38
Dealer: Biblio, GridFreed LLC
Description: Dover Publications, Date: 1955-06-01. Paperback. New. New. In shrink wrap. Looks like an interesting title! Dover Publications ISBN 048620247X 9780486202471 [US]