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REF ID:A2119475
C0NFIDENTIAL
MODIFIED HANDLING AUTHORIZED
Six Lectures on Cryptology
by
William F. Friedman
1965
NATIONAL CRYPTOLOGIC SCHOOL NATIONAL SECURITY AGENCY
CONFIDENTIAL
MODIFIED HANDLING AUTHORIZED
REF ID:A2119475
C0NFIDENTIAL
MODIFIED HANDLING AUTHORIZED
Six Lectures on Cryptology
by
William F. Friedman
1965
NATIONAL CRYPTOLOGIC SCHOOL NATIONAL SECURITY AGENCY
CONFIDENTIAL
MODIFIED HANDLING AUTHORIZED