Mr. Babbage's secret
Subtitle: the tale of a cypher and APL
By: Ole Immanuel Franksen ; foreword by H.H. Goldstine.
Publisher: Strandbergs
Published: 1984
Place of publication: Birker©ıd, Denmark
Language: eng
Number of pages: 319
Subjects: Babbage, Charles, -- 1791-1871.; Cryptography.; APL (Computer program language)
Notes: Published on the occasion of the APL84 Conference, Helsinki,  June 11-13, 1984.

Bibliography: p. 301-319.