Books listed by ISBN

H. F. Gaines

H.G. ยท Helen F. Gaines

Dover Publications

titleISBN-13
(ISBN-10)		year of publica-
tion
Cryptanalysis a Study of Ciphers and Their Solutions978-0-486-20097-2
(0-486-20097-3)		1939

H., F. Gibbard