ISBN 9781500204273 books & textbook
The Quest for Cryptologic Centralization and the Establishment of the NSA:: 1940 - 1952 Declassified.
Center for Cryptologic History, National Security Agency, Thomas L. Burns,
CreateSpace Independent Publishing Platform /2014-06-16 Paperback / 238 Pages
isbn-10: 1500204277 / isbn-13: 9781500204273
