Mr. Babbage's secret
Subtitle: the tale of a cypher and APL
By: Ole Immanuel Franksen ; foreword by H.H. Goldstine.
Publisher: Prentice Hall
Published: 1985
Place of publication: Englewood Cliffs, N.J
Language: eng
Number of pages: 319
Subjects: Babbage, Charles, 1791-1871.; Cryptographers -- Great Britain -- Biography.; Ciphers -- History.; Cryptography -- History.; APL (Computer program language)
Notes: Bibliography: p. 301-319.