Catalogue description DNI out signals (via GCHQ)

Details of ADM 223/361

Reference:	ADM 223/361
Description:	DNI out signals (via GCHQ)
Date:	1949 Jan-1950 Sept
Held by:	Creating government department or its successor, not available at The National Archives
Legal status:	Public Record(s)
Closure status:	Closed Or Retained Document, Open Description
Access conditions:	Retained by Department under Section 3.4

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