Methods for the reconstruction of primary alphabets ...
Contributors: Friedman, Elizebeth Smith, 1893- joint author.; George Fabyan Collection (Library of Congress)
Publisher: Riverbank Laboratories
Published: 1918
Place of publication: Geneva, Ill
Language: eng
Number of pages: 14
Subjects: Ciphers.
Other titles: Reconstruction of primary alphabets.
Notes: "Two hundred copies of this publication were printed."
J. S. Galland, Bibl. of cryptology, p. 68.