Nicht zu knacken
Subtitle: von ungelösten Enigma-Codes zu den Briefen des Zodiac-Killers
By: Klaus Schmeh
Publisher: Hanser
Published: 2012
Place of publication: München
Language: ger
Number of pages: 294
ISBN-13: 9783446429239
Subjects: History; Ciphers; Cryptography; Enigma cipher system
Notes: Includes bibliographical references and index.