Whitelaw's telegraph cyphers
Subtitle: artificial words; 401 millions of pronounceable words all of 10 letters representing 4 complete sets of 8-figure groups; also an additional 134 1/2 millions representing 12 complete sets of 7, 6, & 5-figure groups and all numbers thereunder
Publisher: American Code Co.
Published: 1900
Place of publication: New York
Language: eng
Copyright date: 1975
Subjects: Cipher and telegraph codes