The codebreaker kids
By: George Edward Stanley.
Series: An Avon Camelot book
Publisher: Avon Books
Published: 1987
Place of publication: New York, N.Y
Language: eng
Number of pages: 104
Subjects: Ciphers -- Fiction.
Description: Three friends form a codebreaking service and meet a motley cast of characters including a Bulgarian spy, a man from the State Department, and a little old lady who wants her diary encoded.